Sarvastivada
The Sarvāstivāda (Sanskrit; Chinese: 說一切有部; pinyin: Shuō Yīqièyǒu Bù) were an early school of Buddhism that held to the existence of all dharmas in the past, present and future, the "three times". Vasubandhu's Abhidharmakośa-bhāṣya states, "He who affirms the existence of the dharmas of the three time periods [past, present and future] is held to be a Sarvāstivādin."
The Sarvāstivādins were one of the most influential Buddhist monastic groups, flourishing throughout Northwest India, Northern India, and Central Asia. The Sarvāstivādins are believed to have given rise to the Mūlasarvāstivāda sect, although the relationship between these two groups has not yet been fully determined.
Name
Sarvāstivāda is a Sanskrit term that can be glossed as: "the theory of all exists". Although there is some dispute over how the word "Sarvāstivāda" is to be analyzed, the general consensus is that it is to be parsed into three parts: sarva "all" or "every" + asti "exist" + vada "speak", "say" or "theory". This equates perfectly with the Chinese term, Shuōyīqièyǒu bù (Chinese: 說一切有部), which is literally "the sect that speaks of the existence of everything," as used by Xuanzang and other translators.