Muzu Saelbar (Mu-zu gSal-'bar), later known as the scholar Gongpa Rabsal (bla chen dgongs pa rab gsal) (832–915), was responsible for the renewal of Buddhism in northeastern Tibet, and is counted as the progenitor of the Nyingma (Rnying ma pa) school of Tibetan Buddhism. In the west, Rinchen Zangpo (958-1055) was active as a translator and founded temples and monasteries. Prominent scholars and teachers were again invited from India.