Śrīmad-Bhāgavatam · Text 7.10.62
Who is speaking and story frame
वत्सश्चासीत्तदा ब्रह्मा स्वयं विष्णुरयं हि गौ: ।
प्रविश्य त्रिपुरं काले रसकूपामृतं पपौ ॥ ६२ ॥
vatsaś cāsīt tadā brahmā
svayaṁ viṣṇur ayaṁ hi gauḥ
praviśya tripuraṁ kāle
rasa-kūpāmṛtaṁ papau
Then Lord Brahmā became a calf and Lord Viṣṇu a cow, and at noon they entered the residences and drank all the nectar in the well.
Read this verse on Vedabase.ioThis verse has no purport; its meaning is explained by the verses around it.