The Beifang Pishamentianwang Suijun hufa zhenyan; Tib. lag na rdo rje bcu'i snying po （To.754/947， P.416）; （Mantra for Protection of the Northern King Vai/srava^na， whom Armies Follow）. 1 fasc. （T 1248.21.225-229）， trans. Amoghavajra 不空. Some sources state that this text influenced Indian Buddhism， others state that it is clearly a Chinese apocryphon.