佛說觀佛三昧海經 9.24

9.24

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."