Mahabharata 12.225.16

एवं विस्तारसंक्षेपौ ब्रह्माव्यक्ते पुनः पुनःयुगसाहस्रयोरादावह्नो रात्र्यास्तथैव च

evaṃ vistārasaṃkṣepau brahmāvyakte punaḥ punaḥyugasāhasrayorādāvahno rātryāstathaiva ca

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