Q: An exposition by the Buddha is called a Sutra and an exposition by a Bodhisattva is called a treatise. There are no treatises attributed to the Buddha during his life. How can there be an Abhidharma [attributed to the Buddha]?

A: From the standpoint of the Mahāyāna there are no collections of treatises attributed to the Buddha during his life. But from the standpoint of the Hinayāna there are Abhidharma treatises [attributed to the Buddha].