“The duty will be that in the evening you’ll offer candle, a small candle, all of you, just before the Deity; not within the room, outside the room; and chant the Dāmodarāṣṭaka, namāmīśvaram. That is already printed in our song book. So this will be Dāmodara-vrata.”
Srila Prabhupada
Lecture on SB 1.8.31
Mayapura, October 11, 1974
Reference:
https://vedabase.io/en/library/transcripts/741011sbmay/