Brahma Purana 229.62

Brahmapurāṇa 229.62

tadā prabhṛty ambudavāhano 'sau
na mokṣyate tīrthavaraṃ supuṇyam
na caiva tasmin dvija saṃpracakṣate
tat kṣetram ugraṃ tv atha brahmavadhyā