增壹阿含經 9.6.p2

9.6.p2

It was then that the Bhagavān addressed the monks, “When I continuously examine the things that a person thinks about in their mind, I see: ‘This person will be born up in Heaven in the time it takes to flex their arm.’ Why is that? It’s because of their good mind. Having given rise to a good mind, they’ll be born up in Heaven.”