三彌勒經疏 1.38

1.38

問：若爾，何故《智度論》佛歎精進，云釋迦牟尼佛與彌勒等諸菩薩同時發心，釋迦牟尼精進力超越九劫？答：此二菩薩發心有二，一者決定、二者不決定。不決定者，同時發心；若決定心，自有前後。若盡道理論，應作是說：彌勒菩薩發決定心四十餘劫，然後釋迦乃發決定心。然精進力故超四十餘劫，同在一劫先證菩提。是故《十住毘婆娑》云「或有先發不同心，後發決定心，如釋迦菩薩等。」此即釋迦菩薩因釋迦佛發決定心，彌勒菩薩因彌勒佛發決定心。

Question: If so, why does the Da zhidu lun, when the Buddha praises energetic striving, say that Śākyamuni Buddha and Bodhisattva Maitreya and others generated the mind simultaneously, and that Śākyamuni's power of energetic striving surpassed [him by] nine kalpas? Answer: These two bodhisattvas generating the mind has two aspects: the first is determined, and the second is indeterminate. As for the indeterminate, they generated the mind simultaneously; if it is the determined mind, it naturally has priority and posteriority. If discussing it according to ultimate principle, one should speak thus: Bodhisattva Maitreya generated the determined mind for more than forty kalpas, and only then did Śākyamuni generate the determined mind. Yet, because of the power of energetic striving, he surpassed him by more than forty kalpas and, being in the same kalpa, realized bodhi first. Therefore, the Daśabhūmikavibhāṣā says: 'Some initially generate differing minds, and later generate the determined mind, like Bodhisattva Śākyamuni and others.' This means that Bodhisattva Śākyamuni generated the determined mind on account of Śākyamuni Buddha, and Bodhisattva Maitreya generated the determined mind on account of Maitreya Buddha.