Sutra of the Ten Bhumis (Skt. Daśabhūmika-sūtra, Tib. ས་བཅུ་པ་, Wyl. phags pa sa bcu pa'i mdo) - name given to the 31st chapter of the Avatamsaka Sutra, which describes in detail the ten bhumis.
Vasubandhu wrote an important commentary to this sutra: the Dashabhumivyakhyana, which was only translated into Chinese, during the sixth century.
RigpaWiki:Sutra of the Ten Bhumis