Mahabharata 1.32.25

सुपर्णं च सखायं वै भगवानमरोत्तमःप्रादादनन्ताय तदा वैनतेयं पितामहः

suparṇaṃ ca sakhāyaṃ vai bhagavānamarottamaḥprādādanantāya tadā vainateyaṃ pitāmahaḥ

Our plain-language meaning of this verse is waiting for scholar review.