Sarvastivada
Sarvastivada (Skt. Sarvāstivāda; Tib. ཐམས་ཅད་ཡོད་པར་སྨྲ་བ་, tamché yöpar mawa, Wyl. thams cad yod par smra ba) — one of the four major early Buddhist schools established in India, the others being Pudgalavada, Vibhajyavada and Mahasanghika. Sarvastivada was a widespread group, and there were different sub-schools or sects throughout its history, the most influential ones being the Vaibhashika school based in Kashmir and the Sautrantika school.
The lineage of monastic ordination and vinaya that was transmitted in Tibet with Shantarakshita comes from one of its branches, the Mulasarvastivada (Skt. Mūlasarvāstivāda) or "root"-Sarvastivada.