金剛般若經贊述 1.26

1.26

First, explaining the origins and circumstances of the scripture: that is to say, because of the two causes of emptiness and existence, there was Asaṅga, who, nine hundred years after the Buddha's parinirvāṇa, ascended to beseech Maitreya to expound the Middle Way. The Seventeen Stages of the Yogācāryabhūmi, the Madhyāntavibhāga, and so forth were all spoken by Maitreya, all as explained in the extensive chapters, with slight differences, as [recorded] on a separate sheet.