Sotāpannassa aṅgāni:the 'characteristic qualities of a Stream-winner' are 4:unshakable faith towards the Enlightened One,unshakable faith towards the Doctrine,unshakable faith towards the Order,and perfect morality.Explained in S.LV,I,D.33,in S.XLVII,8 and in Netti-ppakaraṇa these 4 qualities are called Sotāpattiyaṅga (q.v.).