開元釋教錄略出 4.5

4.5

Regarding this Abhidharma Piṭaka, the various schools differ. What has circulated in this land is comparatively extensive. Now, based on the Sarvāstivāda root, the body treatise is placed first, the foot treatises come next, and branches such as the vibhāṣās are arranged at the end. Since the other schools are numerous and difficult to classify systematically, they are left to await future determination without precedence.