Dkon mchog spyi ʼdus kyi khrid yig phul byuṅ lam rim : a detailed exegesis of the practices of the Dkon mchog spyi ʼdus precepts rediscovered by Rig-ʼdzin ʼJaʼ-tshon-sñiṅ-po - Nam-mkhaʼ-rgyal-mtshan, Rgya-ston Sprul-sku (P. Lodoe, 1975)