Vimalamitra
Vimalamitra [Skt.] (Tib. drimé shenyen; dri med bshes gnyen), one of the most learned Indian Buddhist masters. He went to Tibet in the ninth century, where he taught extensively, and composed and translated numerous Sanskrit texts. The quintessence of his teaching is known as the Vima Nyingtik, one of the Heart-essence teachings of the Great Perfection.