The Long Āgama Sūtra 18.19

18.19

「如來說法復有上者，謂言清淨。言清淨者，世尊於諸沙門、婆羅門，不說無益虛妄之言，言不求勝，亦不朋黨，所言柔和，不失時節，言不虛發，是為言清淨。此法無上，智慧無餘，神通無餘，諸世間沙門、婆羅門無有與如來等者，況欲出其上？

“The Dharma that the Tathāgata teaches has another superiority, which is the purity of his words. The purity of his words means the Bhagavān doesn’t speak to ascetics and priests with words that are without benefit or pointless. He doesn’t speak to be superior and isn’t partisan. His words are gentle and don’t become immoderate. His words don’t miss the target. This is the purity of his words.

“This Dharma is unsurpassed, his wisdom is complete, and his miraculous ability is complete. None of the world’s ascetics and priests can match the Tathāgata. How could they surpass him?