Treatise on the Treasure Vehicle of Buddhahood, The ［究竟一乗宝性論］ ( Ratnagotravibhāga-mahāyānottaratantra-shāstra; Chin Chiu-ching-i-ch’eng-pao-hsing-lun;  Kukyō-ichijō-hōshō-ron): A work by Sāramati, a Mahayana scholar of India, translated into Chinese in the sixth century by Ratnamati. It asserts that all beings possess the “matrix of the Thus Come One” ( tathāgata-garbha, also called the matrix of the Tathāgata) or the Buddha nature, and that even icchantikas, persons of incorrigible disbelief, can attain Buddhahood eventually. This treatise is generally thought to have been written sometime around the end of the fourth or the beginning of the fifth century. Tibetan tradition attributes the verses of this work to Maitreya and commentaries on them to Asanga. Maitreya and Asanga were also Mahayana scholars.