Mahabharata 1.14.21

एवं शप्त्वा ततः पुत्रो विनतामन्तरिक्षगःअरुणो दृश्यते ब्रह्मन्प्रभातसमये सदा

evaṃ śaptvā tataḥ putro vinatāmantarikṣagaḥaruṇo dṛśyate brahmanprabhātasamaye sadā

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