Brahmavaivartapurana 3.84.26

Brahmavaivartapurāṇa 3.84.26

tapasā varayāmāsa māṃ varaṃ ca varaṃ varam .
brahmā dadau varaṃ tasyai paśyātkṛṣṇaṃ labheṣyasi .. 25 ..