The Trikāya doctrine (Sanskrit: त्रिकाय, lit
“three bodies”; Chinese: 三身; pinyin: sānshēn; Japanese pronunciation: sanjin, sanshin; Korean pronunciation: samsin; Vietnamese: tam thân, Tibetan: སྐུ་གསུམ, Wylie: sku gsum) is a Mahayana Buddhist teaching on both the nature of reality and the nature of Buddhahood
The doctrine says that Buddha has three kāyas or bodies, the Dharmakāya (ultimate reality), the Saṃbhogakāya (divine incarnation of Buddha), and the Nirmāṇakāya (physical incarnation of Buddha)