Vasubandhu was a prominent Buddhist teacher and one of the most important figures in the development of Mahāyāna Buddhism in India. Though he is particularly admired by later Buddhists as cofounder of the Yogācāra school along with his half brother Asanga, his pre Yogācāra works, such as the Abhidharmakosha and his auto-commentary (Abhidharmakoshabhāshya) on it, are considered masterpieces. He wrote commentaries on many sūtras, works on logic, devotional poetry, works on Abhidharma classifications, as well as original and innovative philosophical treatises. Some of his writings have survived in their original Sanskrit form, but many others, particularly his commentaries, are extant only in their Chinese or Tibetan translations. Vasubandhu was a many-sided thinker, and his personality as it emerges from his works and his biographies shows him as a man who was not only a great genius and a philosopher, but also a human being who was filled with great compassion.
There are three types of asamskrita-dharmah i.e.,