Master Prahevajra was a great Buddhist teacher and he was the first human master of Dzogpa Chenpo, the Great Perfection. He remained in absorption for thirty-two years in a grass hut. He received the empowerments and the 6,400,000 verses of the "tantras of Dzogpa Chenpo" from Vajrasattva in a pure vision. At the end, he dissolved his gross body into a "light body".
Manjusrimitra received the Great Perfection teachings from Prahevajra over a period of seventy-five years and then attained Light-body.