起信論疏筆削記 19.56

19.56

Among the authentic ones, the treatise's "If various, etc.": The meaning of the text clarifies by negation, and the commentary explains directly. Regarding "Must rely, etc.": Because tathatā is the nature of the Tathāgata, cultivating this samādhi is truly the lineage of the Tathāgata. Just as when a person is born into a royal family, he will surely succeed to the royal estate, here it is also like this. Regarding "apart from this, etc.": The *Śūraṅgama-sūtra* says: "The Tathāgatas of the ten directions transcend along a single door to the path of wondrous adornment." It also says: "For the Bhagavats of the ten directions, there is a single path to the door of nirvāṇa." "From the ten abodes onward": This refers to the first of the six kinds of lineage natures, which is the lineage of practice. "The stage of non-retrogression": There are four kinds of non-retrogression: first, in faith; second, in stage; third, in realization; fourth, in practice. Here it is in stage.