CC Madhya 17.39
This is a statement from Śrīmad-Bhāgavatam (10.13.60). After stealing the cowherd boys and calves of Śrī Kṛṣṇa, Lord Brahmā kept them asleep and hid them. After a moment, Brahmā returned to see Kṛṣṇa’s condition. When he saw that Kṛṣṇa was still busy with His cowherd boyfriends and animals and was not disturbed, Lord Brahmā appreciated the transcendental opulence of Vṛndāvana.