Skandapurana 5.80.1

5.80.1

atha suparṇākhyamāhātmyaṃ bhaviṣyaṃti ..
.. ṛṣaya ūcuḥ .. ..
yadetadbhavatā proktaṃ tejovīryasamanvitaḥ ..
garuḍastena saṃjajñe munīnāṃ homakarmaṇā .. 1 ..

Now begins the māhātmya named Suparṇa.
The seers said:
“What was said by you, [namely] that endowed with splendor and strength,
Garuḍa was born from that sacrificial act of the sages; 1