起信論疏筆削記 1.26

1.26

非生滅下，二、顯真如門。前門但約絕待，亡詮旨、離性相，故云寥廓冲漠等。今門約對生滅顯不生滅，待妄立真，故云真如門。即下立義文云：是心真如相即示摩訶衍體。故解釋文云：心真如者，即一法界大總相法門體，所謂心性不生不滅。乃至云：以離念境界，唯證相應故。今疏敘彼，故云非生滅等。

From 'not arising and ceasing' downward is the second [section]: revealing the gate of tathatā. The preceding gate was based solely on the absolute, obliterating expresser and expressed, and being free from nature and marks; hence it said 'empty and vast, profound and desert-like, etc.' The present gate reveals non-arising and non-ceasing in contrast to arising and ceasing, establishing the true in dependence on the false; hence it is called the gate of tathatā. That is, the text setting forth the meaning below says: 'The mark of this mind's tathatā reveals the essence of the Mahāyāna.' Therefore the explanatory text says: 'Mind-tathatā is the essence of the great general-mark teaching-gate of the one dharmadhātu, namely that the mind-nature is unproduced and unceasing.' And so forth, down to: 'Because it is a realm free from thought, corresponding only to realization.' The present commentary recounts that [passage], hence it says 'not arising and ceasing, etc.'