The Abhidharmavatara was written by the great abhidharma master, Skandhila, around the 5th century A.D. This work, now extant in Chinese and Tibetan translations (and a fragmentary one in Tokharian), is an excellent compendium of the Sarvastivada Abhidharma. in a scheme of eight padartha ("Fundamental Categories") - five skandh`a and three asamskrta - it succinctly summarizes practically all th…