Narayani Dasi: I used to also type for him Bhagavatam. One time in Calcutta, I was typing the Fifth Canto - Prayers of Lakshmi to Pradyumna, and there was one prayer where she prays to Pradyumna that you are the intelligence, you are the senses, you are the strength, etc. Prabhupada said, "We should learn these mantras and chant." I thought, 'Oh! Prabhupada is giving me a mantra. I should learn it.' I played it five times like Gayatri mantra so that it would go in my ears. Om hram hrim hrum om namo bhagavate hrsikesaya. (SB 5.18.18)