維摩經玄疏 3.107

3.107

從過去釋迦牟尼佛，至罽那尸棄佛，名一阿僧祇劫。從此常離女人身，爾時不自知——我當作佛、不作佛。今謂：是五停心、別相、總相四念處觀，用此觀心修波羅蜜也。爾時未發煖解，而有慈悲誓願，安撫生死，心無怯弱，故能壞女人業，常受男子身也。爾時未發煖解，位在外凡，故不自知己身當作佛也。

From the past Śākyamuni Buddha to Śikhin Buddha is called one asaṃkhyeya kalpa. From then on he was permanently free from female bodies, and at that time did not know of himself whether he would or would not become a buddha. I now say: these are the contemplations of the five stops to the mind, the specific marks, and the general marks of the four bases of mindfulness; using these mind-contemplations he cultivated the pāramitās. At that time, having not yet generated the understanding of warmth, yet possessing compassionate vows, he pacified [the fears of] birth and death, his mind free of cowardice, and therefore was able to destroy the karma of being a woman and always receive a male body. At that time, having not yet generated the understanding of warmth, his stage was among external worldlings, so he did not know of himself that his own body would become a buddha.