增壹阿含經 10.2.p2

10.2.p2

It was then that the Bhagavān addressed the monks, “One must develop one thing and disseminate one thing. Having cultivated one thing and disseminated one thing, they’ll then attain spiritual knowledge, pacify their conditioned thinking, attain the fruits of the ascetic, and reach the abode of Nirvāṇa. What’s that one thing? It’s the practice of carefulness in the good teachings.