The eight Herukas (Wylie: sgrub pa bka’ brgyad) of the Nyingma mahāyoga tradition (and their corresponding sadhanas) are said to have been received by Padmakara from the Eight Vidyadharas (Tib. Rigdzin), or Eight Great Acharyas: Manjushrimitra, Nagarjuna, Vajrahumkara, Vimalamitra, Prabhahasti, Dhanasamskrita, Shintamgarbha and Guhyachandra.http://www.dharmafellowship.org/biographies/historicalsaints/lord-padmasambhava.htm#promulgating Promulgating the Mahayoga Tantra They were proficient in the practices of, respectively,
