The Law Code of Devala 8

8

tasya śuddhiṃ pravakṣyāmi yāvadekaṃ tu vatsaram
cāndrāyaṇaṃ tu viprasya saparākaṃ prakīrtitam

I shall declare his purification up to a duration of one year: / a Cāndrāyaṇa combined with a Parāka is ordained for a Brahmin;