Mahabharata 1.43.12

तत्र तस्याः समभवद्गर्भो ज्वलनसंनिभःअतीव तपसा युक्तो वैश्वानरसमद्युतिःशुक्लपक्षे यथा सोमो व्यवर्धत तथैव सः

tatra tasyāḥ samabhavadgarbho jvalanasaṃnibhaḥatīva tapasā yukto vaiśvānarasamadyutiḥśuklapakṣe yathā somo vyavardhata tathaiva saḥ

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