SB 10.70.17

Śrīla Prabhupāda writes: “It may be remembered that the Sudharmā assembly house was taken away from the heavenly planet and was reestablished in the city of Dvārakā. The specific significance of the assembly house was that anyone who entered it would be free from the six kinds of material pangs, namely hunger, thirst, lamentation, illusion, old age and death. These are the waves of material existence, and as long as one remained in that assembly house of Sudharmā, he would not be affected by these six material waves.”

In this regard, Śrīdhara Svāmī and Viśvanātha Cakravartī explain that when Lord Kṛṣṇa would exit separately from each of His many palaces, each individual form would be visible to the persons present on those particular palace grounds and to the neighboring residents, but not to others. Then, at the gateway path of the Sudharmā assembly hall, all the forms of the Lord would merge into a single form, and thus He would enter the hall.