sadā pramāṇa-bhūtānām asmākaṁ mahatāṁ tathā
sadā pramāṇa-bhūtānām asmākaṁ mahatāṁ tathā |
vākyāni vyavahārāś ca pramāṇaṁ khalu sarvathā ||
(Bṛhad Bhāgavatāmṛta: 2.2.197)
“The statements and behaviors of ourselves and the great, being pramāṇa [i.e., authoritative], are always pramāṇa [i.e., authoritative means of knowing] verily in all respects.”