To observe the mind （Skt. citta-pari^ks!a^; Tib. sems brtag par bya ba）. To practice mind-observing meditation. . One fascicle， T 1624.31.888-889. By Digna^ga 陈那， translated by Xuanzang in 657. A work on epistemology by Digna^ga that had been translated earlier into Chinese by Parama^rtha 真谛. There is a French translation by Yamaguchi Susumu from Chinese and Tibetan versions. This text uses the three-part syllogism 三支法 of Buddhist logic 因明， to show that the objective conditions 所缘缘 do not exist outside the mind， nor are they non-existent within the mind.