according to jamgon kongtrul, the indian theoretical sources of the mahāmudrā tradition are yogacara tathagatagarbha (buddha-nature) texts such as the samdhinirmocana sutra and the uttaratantra. the actual practice and lineage of mahāmudrā can be traced back to wandering mahasiddhas or great adepts during the indian pala dynasty (760-1142), beginning with the 8th century siddha saraha.