Purificatory (Conduct)- A type of Cāritra (ascetic conduct);
a special course of Tapa (austerities), which is undertaken for eighteen months by a group of nine ascetics who are Navapūrvadhara (possessor of the knowledge of nine Pūrvas (earlier lore of canonical works)) or a little less than Daśapūrvadhara (possessor of knowledge of ten Pūrvas).
savve carittamaṃto ya, daṃsaṇe pariniṭṭhiyā. ṇavapuvviyā jahannāeṇaṃ, ukkosa dasapuvviyā........'daśapūrviṇaḥ' kincid nyunadasapūrvadharā mantavyāḥ.
(BṛBhā 6454 Vṛ)