倶舎) was one of the six Buddhist schools (南都六宗, Nanto Rikushū
), introduced to Japan during Asuka
and Nara period
. Along with Jōjitsu
, it was initially based on Hinayana
schools. Kusha was never considered to be an independent school. It was considered to be an adjunct of the Hossō
sect, due to the main works of both schools being ascribed to Vasubandhu
Buddhism was introduced into Japan from China. The school takes its name from its authoritative text, Dharma Analysis Treasury, the Abidatsuma-kusha-ron (Sanskrit:Abhidharma-kosa), by the 4th or 5th century Indian philosopher Vasubandhu. The Kusha school is considered to be an offshoot of the Indian Sarvastivada school.
Names commonly associated with Kusha are Dōshō (道昭 638-700), Joe (644-714), Chitsū (智通 ?-?), Chitatsu (智達 ?-?), and Genbō (玄昉 ?-746). Its teachings were commonly thought to be part of the Hossō sect.