vatsaḥ—a calf; ca—also; āsīt—became; tadā—at that time; brahmā—Lord Brahmā; svayam—personally; viṣṇuḥ—Lord Viṣṇu, the Supreme Personality of Godhead; ayam—this; hi—indeed; gauḥ—a cow; praviśya—entering; tri-puram—the three residences; kāle—at noon; rasa-kūpa-amṛtam—the nectar contained in that well; papau—drank.