ŚiraUpan, 1, 35.2 atha kasmād ucyate praṇavaḥ yasmād uccāryamāṇa eva ṛgyajuḥsāmātharvāṅgirasaṃ brahma brāhmaṇebhyaḥ praṇāmayati nāmayati ca tasmād ucyate praṇavaḥ /

SDhPS, 12, 26.1 atha khalu te bodhisattvā mahāsattvāḥ samanantarāvalokitā bhagavatā utthāyāsanebhyo yena bhagavāṃs tenāñjaliṃ praṇāmyaivaṃ cintayāmāsuḥ /