Asanga's brother Vasubandhu wrote a large number of texts associated with the Yogacara including: "Trisvabhāva-nirdesa", "Vimsatika", "Trimsika", and the "Abhidharmakośa-bhāsya" although this work predates his conversion to the Mahayana and a minority of scholars speculate that there may have been two different Vasubandhus who composed these works.