Devimahatmya or Saptashaticandi 12.68

Devīmāhātmya or Saptaśatīcaṇḍī 12.68

viṣṇukarṇamalodbhūtau hantuṃ brahmāṇamudyatau
sa nābhikamale viṣṇoḥ sthito brahmā prajāpatiḥ