nāham ijyā-prajātibhyāṁ tapasopaśamena vā
nāham ijyā-prajātibhyāṁ tapasopaśamena vā |
tuṣyeyaṁ sarva-bhūtātmā guru-śuśrūṣayā yathā ||
(Śrīmad Bhāgavatam: 10.80.34)
“I [Bhagavān], the Self of all beings, shall not be satisfied by sacrifice, higher birth [alt., procreation], austerity, or equilibrium as [I am] by service to the guru.”