Naradapurana 1.26.30

Nāradapurāṇa 1.26.30

ārdrāsthi ca tathocchiṣṭaṃ śūdraṃ ca patitaṃ tathā /
sarpaṃ ca bhaṣaṇaṃ spṛṣṭvā sacailaṃ snānamācaret //