長阿含經 22.p81

22.p81

The Buddha said, “If a monk’s mind is purified and undefiled as a result of samādhi, is flexible and gentle, dwells in imperturbability … and so forth up to … attains the three insights. He eliminates ignorance and gives rise to wise insight. He produces the great light of Dharma and ceases being in darkness, and the knowledge that the contaminants have ended arises in him. Why is that? These things are a result of diligence, focused attention that’s not lost, and attainment of a pleasant and solitary dwelling. Priest, this is perfecting wisdom.”