 He did not rule over the whole of Tibet; his power was probably limited to the Yarlung Tsangpo Grand Canyon area.According to an indigenous legend, Buddhist scriptures (among them the "Kāraṇḍavyūhasūtra") first arrived in Tibet in his time.The tale claims that this happened in a miraculous way (the volumes fell from the sky on the roof of the royal palace a motif which also happened to one of the royal personages of the name Indrabhuti), but there may be an historical background (arrival of Buddhist missionaries).