法華義疏 7.167

7.167

付財之教即是《大品》，《大品》是大乘之初，自《大品》之前但明三藏，故《釋論》云「佛於三藏中未說菩薩行」。若爾，前未明大乘，聲聞何由已解耶？

Question: The teaching of entrusting the wealth is none other than the Pañcaviṃśatisāhasrikā Prajñāpāramitā Sūtra, and the Pañcaviṃśatisāhasrikā Prajñāpāramitā Sūtra is the beginning of the Mahāyāna. Prior to the Pañcaviṃśatisāhasrikā Prajñāpāramitā Sūtra, only the Tripiṭaka was explained; therefore the Mahāprajñāpāramitopadeśa states: "In the Tripiṭaka the Buddha did not yet explain the bodhisattva practices." If so, since the Mahāyāna had not yet been explained before, how could the śrāvakas have already understood it?