sādhu-sevā gavāṁ grāsaḥ
kathā viṣṇos tathārcanam
jāgare paścime yāme
durlabhaḥ kārttike kalau

sādhu-to the devotees; sevā-service; gavām-of the cows; grāsaḥ-feeding; kathā-talking; viṣṇoḥ-of Lord Viṣṇu; tathā-so; arcanam-worship; jāgare-vigil; paścime-to the last; yāme-yama; durlabhaḥ-rare; kārttike-in Kārttika; kalau-in Kali-yuga.

“During the month of Kārttika serving the devotees, feeding the cows, talking about and worshiping Lord Viṣṇu, and keeping a vigil until the last part of the night bring, in the Kali-yuga, a very rare result.”

– Kārtik Mahatmya Text 64