The ʼDus pa rin po che’i rgyal dri ma med pa gzi brjid rab tu ʼbar ba’i mdo is a twelve-volume biography of Tönpa Shenrab Mibo, mythical founder of the Bön religion. The second volume contains the rGyal bus bka’ khrims bstsal ba’i mdo (Sutra of the prince’s law-giving). It probably dates from the late 14th century.
