四明十義書 2.159

2.159

二觀心明三身者，凡厥有心，心即法性，法性者即是本淨，本淨者即是法身也。觀心相應，明時無暗，即無垢義。無垢義者，即是智斷果報身也。隨所利物，起一切事，皆如幻如化水月鏡像，和光無染，即是稱緣應身義也。如是三義不縱不橫，為菩提種等。

'Second, explaining the three bodies by contemplating the mind: Wherever there is a mind, the mind is precisely dharmatā; dharmatā is fundamentally pure, and fundamental purity is the dharmakāya. When contemplating the mind corresponds [with principle], being bright without darkness is the meaning of spotlessness; the meaning of spotlessness is the fruition retribution body of wisdom and severance. In accordance with benefiting living beings, all phenomena that arise are like illusions, like transformations, the moon in water, or images in a mirror; harmonizing its light without defilement is the meaning of the nirmāṇakāya responding to conditions. These three meanings are neither vertical nor horizontal, serving as the seed of bodhi, and so forth.'