title no. 20; part of biographies of the successive masters in the lam 'bras transmission from Virūpa through ngor chen kun dga' bzang po (1382-1456), i.e. de bzhin gshegs pa thams cad kyi bgrod pa gcig pa'i lam chen gsung ngag rin po che'i bla ma brgyud pa'i rnam thar glegs bam, vol. 01|ka, pp. 1-473