According to one’s taste and strength, hearing, chanting and remembrance may be followed by pāda-sevanam. One obtains the perfection of remembering when one constantly thinks of the lotus feet of the Lord. Being intensely attached to thinking of the Lord’s lotus feet is called pāda-sevanam. When one is particularly adherent to the process of pāda-sevanam, this process gradually includes other processes, such as seeing the form of the Lord, touching the form of the Lord, circumambulating the form or temple of the Lord, visiting such places as Jagannātha Purī, Dvārakā and Mathurā to see the Lord’s form, and bathing in the Ganges or Yamunā. Bathing in the Ganges and serving a pure Vaiṣṇava are also known as tadīya-upāsanam. This is also pāda-sevanam. The word tadīya means “in relationship with the Lord.” Service to the Vaiṣṇava, Tulasī, Ganges and Yamunā are included in pāda-sevanam. All these processes of pāda-sevanam help one advance in spiritual life very quickly.