Vajrasuci (Siddhacarya Ghoshapada) 7

7

(ca) ato mānavadharmaprāmāṇyājjīvastāvad brāhmaṇo na bhavati
(cha) jātirapi brāhmaṇo na bhavati| kasmāt? smṛtiprāmāṇyād
uktaṃ hi smṛtauhastinyāmacalo jāta ulūkyāṃ keśapiṅgalaḥ
agastyo'gastipuṣpācca kauśikaḥ kuśasambhavaḥ15

(f) Therefore, from the authority of the Laws of Manu, the soul is not the brāhmaṇa.
(g) Nor is birth the brāhmaṇa. Why? Because of the authority of Smṛti.
For it is stated in Smṛti:
Acala was born from an elephant, Keśapiṅgala from an owl;
Agastya from an agasti flower, and Kauśika from kuśa grass;