Hi, I’m trying to understand how does insight develop over consecutive lives, especially in the case of bodhisattas and (future) chief disciples of a (future) buddha.
As far as I can tell, there seem to be two opposing viewpoints in the commentaries:
1. Insight develops all the way up to sankhar’upekkha nana over multiple lives.
2. When insight develops to paccaya pariggaha nana, one becomes a cula-sotpanna of a fixed destiny, which means that s/he’s assured of not being reborn in the four lower realms and (if I’m not mistaken) assured of becoming a sotapanna in the same life. This would seem to imply that insight can be developed beyond paccaya pariggaha nana only in the last life.
The two viewpoints seem to be contradictory so I wonder if anyone knows how are they reconciled? Thanks.
The sources I came across online for the first viewpoint:
Three posts by Bhante Dhammanando from DSG 42544 42575 42602, giving translations from Majjhima and Puggalapannatti commentaries and Visuddhimagga 442-3 (Path of Purification XIV 28-31).
I remember Pa-Auk Sayadaw says the same thing (about sankhar’upekkha nana) in his Knowing and Seeing, though can't remember the page at the moment.
Three quotes which are related to cula-sotapanna issue are given in this post - from Visuddhimagga XIX, 26, 27; Ledi Sayadaw and Dr Mehm Tin Mon.
Best wishes

Maybe they have more to say on this issue. Need to get back to that book.....