Hui-neng, in the “Plateform scripture” (liu-tsu t’an-ching), in Wing-Tsit Chan, Chinese Philosophy, Chapter 26, 19
(1) Buddhism conceives a Buddha to have a threefold body, namely, the Lawbody or spiritual body (Dharmakaya), the Reward-body or Enjoyment-body (Sambhogakaya), and the Transformation-body or body of incarnation (Nirmanakaya). The Law-body is the Buddha-body in its self-nature, the body of the Dharma or truth, the body of reality, the body of principle. This "body" has no body existence. It is identical with truth. In various schools it is identical with the Realm of Dharma (Dharmadhatu), Buddha-nature, or the Storehouse of the “Thus-come" (Tathagatagarbha). The Reward-body is the person embodied with real insight, enjoying his own enlightenment or that of others. The Transformation body is a body variously appearing to save people. The three bodies are three in one, are possessed of all Buddhas, and are potential to all men.