佛說觀佛三昧海經 4.40

4.40

佛告阿難：「持是語者即持佛心，作是觀者能觀佛心，諸佛如來以大慈悲而以為心，戒、定、慧、解脫、解脫知見而以為身，十力、四無所畏、十八不共法、大悲三念處而自莊嚴。如是觀者名觀佛心。」

The Buddha told Ānanda: “To uphold these words is to uphold the Buddha’s mind; to engage in this contemplation is to be able to contemplate the Buddha’s mind. The Buddhas and Tathāgatas take great loving-kindness and compassion as their mind, and take morality, concentration, wisdom, liberation, and the knowledge and vision of liberation as their body, and adorn themselves with the ten powers, the four fearlessnesses, the eighteen unshared dharmas, and the three foundations of mindfulness of great compassion. Contemplating in this way is termed contemplating the Buddha’s mind.”