"① Dharmakaya (The truth or realization that the Buddha attained) ② Sambhogakaya (Various excellent attributes obtained as rewards for becoming a Buddha, including the highest wisdom of enlightenment) ③ Nirmanakaya (The form manifested in reality according to the needs of individuals to save them from suffering, the compassionate aspect)""Sanjin (read as 'mitsumi') From the Encyclopedia of World Knowledge (old edition) Mention of Sanjin From 'Amida': ... In esoteric Buddhism, it is included in its pantheon as one of the manifestations of the Absolute. In the Trikaya doctrine, it is considered as the Sambhogakaya. It
法身即ち大日如来"Dharmakaya, namely Great Sun Tathagata" https://www.buddha8emperor.jp