Sarvastivada
The Sarvāstivāda (Sanskrit: सर्वास्तिवाद sarvāstivāda; traditional Chinese: 說一切有部; pinyin: shuōyīqièyǒu-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:
25c-d. He who affirms the existence of the dharmas of the three time periods is held to be a Sarvastivadin.Read more about Sarvastivada: Name, Origination and History, Appearance, Doctrinal Systems, Relationship To Mahāyāna, Relationship To Mūlasarvāstivāda, Details of Philosophy