長阿含經 3.p17

3.p17

“‘Gentlemen, after awakening himself with this teaching, the Buddha reveals the way to Nirvāṇa and the gradual approach and entry into extinguishment. It’s like the Gaṅgā River and the Yamunā River. Those two rivers flow into each other and then enter the ocean. The Buddha is likewise. He reveals the way to Nirvāṇa and the gradual approach and entry into extinguishment. I’ve not seen a Tathāgata, Arhat, and Completely Awakened One in the past, future, or present reveal the way to Nirvāṇa like the Buddha does.