The Pali scriptures preserved belong to the Mahavihara tradition of the Theravadin located in Sri Lanka. Some texts, however, originated in other regions and perhaps traditions as for instance the Milindapanha or the Apadana. This to my opinion holds true also for a number of Vinaya sources, most of which are only preserved as quotations in the Pali literature, namely for the Andhakatthakatha, Vajirabuddhi's Anuganthipada, the apare quoted therein, the Vajirabuddhitika and, perhaps, the Kankhavitaranipuranatika. There is to my opinion strong evidence that these texts originated in a tradition connected with South India, if not in South India itself.
