The Indian Dzogchen master Vimalamitra is believed to have translated, composed, and concealed some of the central tantric teachings of the Nyingma tradition during the late eighth century reign of Tri Songdetsen. Historically, very few details surrounding his life and teachings can be confirmed. The dates of his birth, the location of his birthplace in India, the names of his parents, and the date of his arrival in Tibet have all been disputed. According to contemporary Nyingma accounts, he was born in India and became proficient in the sūtra-based scriptures before traveling to China to receive instructions from Śrī Siṃha. In China he received the Nyingtik teachings and achieved realization, then returned to India. Only then, at over one hundred years of age, did he enter Tibet. In Tibet, he taught and translated a wide array of esoteric tantras, concealed the Nyingtik terma, and returned to China where he achieved the rainbow body. ... read more at
