Skandapurana 1.4.42.72

1.4.42.72

gavāṃ kṣīraṃ pradātavyaṃ jihvāśodhanamuttamam..
jihvāparīkṣaṇaṃ kuryāddagdhā cenna tu vimocyate.. 44.72 ..

Cow's milk should be given, the best purifier of the tongue. / He should conduct an examination of the tongue; if it is burned, he is not cleared;