Śrīmad-Bhāgavatam 2.1.17
SB 2.1.17
Open the full passageSanskrit
abhyasen manasā śuddhaṁ trivṛd-brahmākṣaraṁ param mano yacchej jita-śvāso brahma-bījam avismaran
Translation
After sitting in the above manner, make the mind remember the three transcendental letters [a-u-m], and by regulating the breathing process, control the mind so as not to forget the transcendental seed.