Īśo 15

हिरण्मयेन पात्रेण सत्यस्यापिहितं मुखम्।
तत्त्वं पूषन्नपावृणु सत्यधर्माय दृष्टये॥१५॥

Text

hiraṇmayena pātreṇa
satyasyāpihitaṁ mukham
tat tvaṁ pūṣann apāvṛṇu
satya-dharmāya dṛṣṭaye

Synonyms

hiraṇmayenaplugin-autotooltip__small plugin-autotooltip_bighiraṇmayena

by a golden effulgence; golden.
—by a golden effulgence; pātreṇaplugin-autotooltip__small plugin-autotooltip_bigpātreṇa

by a dazzling covering; with a pot.
—by a dazzling covering; satyasyaplugin-autotooltip__small plugin-autotooltip_bigsatyasya

of all relative truths, which are emanations from the Absolute Truth, Kṛṣṇa; of all that is accepted as the truth; of the Absolute Truth; of the Supreme Truth.
—of the Supreme Truth; apihitamplugin-autotooltip__small plugin-autotooltip_bigapihitam

covered.
—covered; mukhamplugin-autotooltip__small plugin-autotooltip_bigmukham

a mouth; countenance; directions; face; faces; happiness; mouth; the face; the mouth; the mouth through which the Supreme Personality of Godhead eats; your face.
—the face; tatplugin-autotooltip__small plugin-autotooltip_bigtat

establishment of the statement //tat tvam asi//.
—that covering; tvamplugin-autotooltip__small plugin-autotooltip_bigtvam

establishment of the statement //tat tvam asi//.
—Yourself; pūṣanplugin-autotooltip__small plugin-autotooltip_bigpūṣan

O maintainer; O sustainer.
—O sustainer; apāvṛṇuplugin-autotooltip__small plugin-autotooltip_bigapāvṛṇu

kindly remove.
—kindly remove; satyaplugin-autotooltip__small plugin-autotooltip_bigsatya

as truth; by truthfulness; certainly; eternal; fire without sacrifice; in Satya-yuga; pure; real; Satya; Satyeyu; spoken in scripture; the Satyaloka planet; the Satyaloka planetary system; the truth; true; truly; truth; truthful.
—pure; dharmāyaplugin-autotooltip__small plugin-autotooltip_bigdharmāya

for perfection of religious life; for religion; the source of all religious principles; to Dharma; unto King Dharma, Yamarāja; unto one who knows the best of all religion; unto the devotee.
—unto the devotee; dṛṣṭayeplugin-autotooltip__small plugin-autotooltip_bigdṛṣṭaye

for exhibiting; for the purpose of finding out.
—for exhibiting. 

Translation

O my Lord, sustainer of all that lives, Your real face is covered by Your dazzling effulgence. Kindly remove that covering and exhibit Yourself to Your pure devotee. 

Purport

In the Bhagavad-gītā (14.27)plugin-autotooltip__small plugin-autotooltip_bigBhagavad-gītā As It Is 14.27

And I am the basis of the impersonal Brahman, which is the constitutional position of ultimate happiness, and which is immortal, imperishable and eternal.
, the Lord explains His personal rays (brahmajyoti), the dazzling effulgence of His personal form, in this way: 

brahmaṇo hi pratiṣṭhāham
amṛtasyāvyayasya ca
śāśvatasya ca dharmasya
sukhasyaikāntikasya ca

“I am the basis of the impersonal Brahman, which is immortal, imperishable and eternal and is the constitutional position of ultimate happiness.” Brahman, Paramātmā and Bhagavān are three aspects of the same Absolute Truth. Brahman is the aspect most easily perceived by the beginner; Paramātmā, the Supersoul, is realized by those who have further progressed; and Bhagavān realization is the ultimate realization of the Absolute Truth. This is confirmed in the Bhagavad-gītā (7.7)plugin-autotooltip__small plugin-autotooltip_bigBhagavad-gītā As It Is 7.7

O conquerer of wealth [Arjuna], there is no Truth superior to Me. Everything rests upon Me, as pearls are strung on a thread.
, where Lord Kṛṣṇa says that He is the ultimate concept of the Absolute Truth: mattaḥ parataraṁ nānyat. Therefore Kṛṣṇa is the source of the brahmajyoti as well as the all-pervading Paramātmā. Later in the Bhagavad-gītā (10.42)plugin-autotooltip__small plugin-autotooltip_bigBhagavad-gītā As It Is 10.42

But what need is there, Arjuna, for all this detailed knowledge? With a single fragment of Myself I pervade and support this entire universe.
Kṛṣṇa further explains: 

atha vā bahunaitena
kiṁ jñātena tavārjuna
viṣṭabhyāham idaṁ kṛtsnam
ekāṁśena sthito jagat

“But what need is there, Arjuna, for all this detailed knowledge? With a single fragment of Myself I pervade and support this entire universe.” Thus by His one plenary expansion, the all-pervading Paramātmā, the Lord maintains the complete material cosmic creation. He also maintains all manifestations in the spiritual world. Therefore in this śruti-mantra of Śrī Īśopaniṣad, the Lord is addressed as pūṣan, the ultimate maintainer. 

The Personality of Godhead, Śrī Kṛṣṇa, is always filled with transcendental bliss (ānanda-mayo ‘bhyāsāt). When He was present at Vṛndāvana in India five thousand years ago, He always remained in transcendental bliss, even from the beginning of His childhood pastimes. The killings of various demons—such as Agha, Baka, Pūtanā and Pralamba—were but pleasure excursions for Him. In His village of Vṛndāvana He enjoyed Himself with His mother, brother and friends, and when He played the role of a naughty butter thief, all His associates enjoyed celestial bliss by His stealing. The Lord’s fame as a butter thief is not reproachable, for by stealing butter the Lord gave pleasure to His pure devotees. Everything the Lord did in Vṛndāvana was for the pleasure of His associates there. The Lord created these pastimes to attract the dry speculators and the acrobats of the so-called haṭha-yoga system who wish to find the Absolute Truth. 

Of the childhood play between the Lord and His playmates, the cowherd boys, Śukadeva Gosvāmī says in Śrīmad-Bhāgavatam (10.12.11)plugin-autotooltip__small plugin-autotooltip_bigŚrīmad Bhāgavatam 10.12.7-11

All the boys would be differently engaged. Some boys blew their flutes, and others blew bugles made of horn. Some imitated the buzzing of the bumblebees, and others imitated the voice of the cuckoo. Some boys imitated flying birds by running after the birds' shadows on the ground, some imitated the beautiful movements and attractive postures of the swans, some sat down with the ducks, sitting silently, and others imitated the dancing of the peacocks. Some boys attracted young monkeys in the trees, some jumped into the trees, imitating the monkeys, some made faces as the monkeys were accustomed to do, and others jumped from one branch to another. Some boys went to the waterfalls and crossed over the river, jumping with the frogs, and when they saw their own reflections on the water they would laugh. They would also condemn the sounds of their own echoes. In this way, all the cowherd boys used to play with Kṛṣṇa, who is the source of the Brahman effulgence for jñānīs desiring to merge into that effulgence, who is the Supreme Personality of Godhead for devotees who have accepted eternal servitorship, and who for ordinary persons is but another ordinary child. The cowherd boys, having accumulated the results of pious activities for many lives, were able to associate in this way with the Supreme Personality of Godhead. How can one explain their great fortune?

itthaṁ satāṁ brahma-sukhānubhūtyā
dāsyaṁ gatānāṁ para-daivatena
māyāśritānāṁ nara-dārakeṇa
sākaṁ vijahruḥ kṛta-puṇya-puñjāḥ

“The Personality of Godhead, who is perceived as the impersonal, blissful Brahman by the jñānīs, who is worshiped as the Supreme Lord by devotees in the mood of servitorship, and who is considered an ordinary human being by mundane people, played with the cowherd boys, who had attained their position after accumulating many pious activities.” 

Thus the Lord is always engaged in transcendental loving activities with His spiritual associates in the various relationships of śānta (neutrality), dāsya (servitorship), sakhya (friendship), vātsalya (parental affection) and mādhurya (conjugal love). 

Since it is said that Lord Kṛṣṇa never leaves Vṛndāvana-dhāma, one may ask how He manages the affairs of the creation. This is answered in the Bhagavad-gītā (13.14-18)plugin-autotooltip__small plugin-autotooltip_bigBhagavad-gītā As It Is 13.14

Everywhere are His hands and legs, His eyes and faces, and He hears everything. In this way the Supersoul exists.
: The Lord pervades the entire material creation by His plenary part known as the Paramātmā, or Supersoul. Although the Lord personally has nothing to do with material creation, maintenance and destruction, He causes all these things to be done by His plenary expansion, the Paramātmā. Every living entity is known as ātmā, soul, and the principal ātmā who controls them all is Paramātmā, the Supersoul. 

This system of God realization is a great science. The materialistic sāṅkhya-yogīs can only analyze and meditate on the twenty-four factors of the material creation, for they have very little information of the puruṣa, the Lord. And the impersonal transcendentalists are simply bewildered by the glaring effulgence of the brahmajyoti. If one wants to see the Absolute Truth in full, one has to penetrate beyond the twenty-four material elements and the glaring effulgence as well. Śrī Īśopaniṣad points toward this direction, praying for the removal of the hiraṇmaya-pātra, the dazzling covering of the Lord. Unless this covering is removed so one can perceive the real face of the Personality of Godhead, factual realization of the Absolute Truth can never be achieved. 

The Paramātmā feature of the Personality of Godhead is one of three plenary expansions, or viṣṇu-tattvas, collectively known as the puruṣa-avatāras. One of these viṣṇu-tattvas who is within the universe is known as Kṣīrodakaśāyī Viṣṇu. He is the Viṣṇu among the three principal deities-Brahmā, Viṣṇu and Śiva—and He is the all-pervading Paramātmā in each and every individual living entity. The second viṣṇu-tattva within the universe is Garbhodakaśāyī Viṣṇu, the collective Supersoul of all living entities. Beyond these two is Kāraṇodakaśāyī Viṣṇu, who lies in the Causal Ocean. He is the creator of all universes. The yoga system teaches the serious student to meet the viṣṇu-tattvas after going beyond the twenty-four material elements of the cosmic creation. The culture of empiric philosophy helps one realize the impersonal brahmajyoti, which is the glaring effulgence of the transcendental body of Lord Śrī Kṛṣṇa. That the brahmajyoti is Kṛṣṇa’s effulgence is confirmed in the Bhagavad-gītā (14.27)plugin-autotooltip__small plugin-autotooltip_bigBhagavad-gītā As It Is 14.27

And I am the basis of the impersonal Brahman, which is the constitutional position of ultimate happiness, and which is immortal, imperishable and eternal.
as well as the Brahma-saṁhitā (5.40): 

yasya prabhā-prabhavato jagad-aṇḍa-koṭi-
koṭiṣv aśeṣa-vasudhādi vibhūti-bhinnam
tad brahma niṣkalam anantam aśeṣa-bhūtaṁ
govindam ādi-puruṣaṁ tam ahaṁ bhajāmi

“In the millions and millions of universes there are innumerable planets, and each and every one of them is different from the others by its cosmic constitution. All of these planets are situated in a corner of the brahmajyoti. This brahmajyoti is but the personal rays of the Supreme Personality of Godhead, Govinda, whom I worship.” This mantra from the Brahma-saṁhitā is spoken from the platform of factual realization of the Absolute Truth, and the śruti-mantra of Śrī Īśopaniṣad under discussion confirms this mantra as a process of realization. The Īśopaniṣad mantra is a simple prayer to the Lord to remove the brahmajyoti so that one can see His real face. This brahmajyoti effulgence is described in detail in several mantras of the Muṇḍaka Upaniṣad (2.2.10-12): 

hiraṇmaye pare kośe
virajaṁ brahma niṣkalam
tac chubhraṁ jyotiṣāṁ jyotis
tad yad ātma-vido viduḥ

na tatra sūryo bhāti na candra-tārakaṁ
nemā vidyuto bhānti kuto ‘yam agniḥ
tam eva bhāntam anu bhāti sarvaṁ
tasya bhāsā sarvam idaṁ vibhāti

brahmaivedam amṛtaṁ purastād brahma
paścād brahma dakṣiṇataś cottareṇa
adhaś cordhvaṁ ca prasṛtaṁ brahmai-
vedaṁ viśvam idaṁ variṣṭham

“In the spiritual realm, beyond the material covering, is the unlimited Brahman effulgence, which is free from material contamination. That effulgent white light is understood by transcendentalists to be the light of all lights. In that realm there is no need of sunshine, moonshine, fire or electricity for illumination. Indeed, whatever illumination appears in the material world is only a reflection of that supreme illumination. That Brahman is in front and in back, in the north, south, east and west, and also overhead and below. In other words, that supreme Brahman effulgence spreads throughout both the material and spiritual skies.” 

Perfect knowledge means knowing Kṛṣṇa as the root of this Brahman effulgence. This knowledge can be gained from such scriptures as Śrīmad-Bhāgavatam, which perfectly elaborates the science of Kṛṣṇa. In Śrīmad-Bhāgavatam, the author, Śrīla Vyāsadeva, has established that one will describe the Supreme Truth as Brahman, Paramātmā or Bhagavān according to one’s realization of Him. Śrīla Vyāsadeva never states that the Supreme Truth is a jīva, an ordinary living entity. The living entity should never be considered the all-powerful Supreme Truth. If he were the Supreme, he would not need to pray to the Lord to remove His dazzling cover so that the living entity could see His real face. 

The conclusion is that one who has no knowledge of the potencies of the Supreme Truth will realize the impersonal Brahman. Similarly, when one realizes the material potencies of the Lord but has little or no information of the spiritual potencies, he attains Paramātmā realization. Thus both Brahman and Paramātmā realization of the Absolute Truth are partial realizations. However, when one realizes the Supreme Personality of Godhead, Śrī Kṛṣṇa, in full potency after the removal of the hiraṇmaya-pātra, one realizes vāsudevaḥ sarvam iti: [Bg. 7.19]plugin-autotooltip__small plugin-autotooltip_bigBhagavad-gītā As It Is 7.19

After many births and deaths, he who is actually in knowledge surrenders unto Me, knowing Me to be the cause of all causes and all that is. Such a great soul is very rare.
Lord Śrī Kṛṣṇa, who is known as Vāsudeva, is everything-Brahman, Paramātmā and Bhagavān. He is Bhagavān, the root, and Brahman and Paramātmā are His branches. 

In the Bhagavad-gītā (6.46plugin-autotooltip__small plugin-autotooltip_bigBhagavad-gītā As It Is 6.46

A yogī is greater than the ascetic, greater than the empiricist and greater than the fruitive worker. Therefore, O Arjuna, in all circumstances, be a yogī.
-47)plugin-autotooltip__small plugin-autotooltip_bigBhagavad-gītā As It Is 6.47

And of all yogīs, he who always abides in Me with great faith, worshiping Me in transcendental loving service, is most intimately united with Me in yoga and is the highest of all.
there is a comparative analysis of the three types of transcendentalists-the worshipers of the impersonal Brahman (jñānīs), the worshipers of the Paramātmā feature (yogīs) and the devotees of Lord Śrī Kṛṣṇa (bhaktas). It is stated there that the jñānīs, those who have cultivated Vedic knowledge, are better than ordinary fruitive workers, that the yogīs are still greater than the jñānīs, and that among all yogīs, those who constantly serve the Lord with all their energies are the topmost. In summary, a philosopher is better than a laboring man, a mystic is superior to a philosopher, and of all the mystic yogīs, he who follows bhakti-yoga, constantly engaging in the service of the Lord, is the highest. Śrī Īśopaniṣad directs us toward this perfection.