The Long Āgama Sūtra 18.11

18.11

又告舍利弗：「過去、未來、現在如來、至真、等正覺心中所念，汝不能知，何故決定作是念？因何事生是念？一向堅持而師子吼，餘沙門、婆羅門若聞汝言：『我決定知過去、未來、現在沙門、婆羅門智慧、神足、功德、道力，無有與如來、無所著、等正覺等者。』當不信汝言。」

The Buddha again asked Śāriputra, “You aren’t able to know the thoughts in the minds of past, future, or present Tathāgatas, Arhats, and Completely Awakened Ones, so why are you so certain about this thought you’ve had? What caused you to have this thought? You’ve exclusively upheld the lion’s roar. If other ascetics and priests hear you say, ‘I know with certainty that there’s no ascetic or priest of the past, future, or present whose powers of wisdom, miraculous ability, virtue, or awakening match those of the Tathāgata, Arhat, and Completely Awakened One,’ they won’t believe you.”