佛說觀佛三昧海經 9.24

9.24

佛告阿難：「汝今善持慎勿忘失，過去未來三世諸佛，是諸世尊皆說如是念佛三昧，我與賢劫諸大菩薩，因是念佛三昧力故，得一切智威神自在，如是十方無量諸佛，皆由此法成三菩提。」

The Buddha told Ānanda: "Now hold this well and take care not to forget it. The Buddhas of the three times—past, future, and [present]—all these Bhagavats have spoken of such a buddhānusmṛti-samādhi. Through the power of this buddhānusmṛti-samādhi, I and the great bodhisattvas of the Bhadrakalpa attained the majestic supernatural sovereignty of omniscience. In this way, immeasurable Buddhas of the ten directions have all attained sambodhi by means of this teaching."