長阿含經 6.p18

6.p18

“When such people exist, you should visit them often and inquire about all manner of cultivation at the appropriate time: ‘What’s good, and what’s evil? What’s a transgression, and what’s not a transgression? Who shall I befriend and who shouldn’t be befriended? What’s appropriate to do, and what can’t be done? Giving donations to what teaching will bring happiness for a long time?’ After you ask such questions, use your mind to investigate what ought to be practiced and practice it. Abandon what ought to be abandoned.