bral rgyu

བྲལ་རྒྱུ
bral ba'i rgyu (primary) cause (underlying/ of a process) of divestment/ disjunction/ disengagement [RB]

causal basis of separation from defilements. cause of freedom, [Syn. sbyong byed. def. khams sam snying po'i steng gi dri ma sbyong byed thar pa cha mthun dge ba lam ldan gyi rnam pa'o [RY]

caus[al basis] of separation from defilements/ freedom [= sbyong byed def [[aspect of the virtuous path purifying stains on the dhatu or essence and according w liberation] [IW]