摩訶止觀 7.24

7.24

Second, explaining mutual subsumption: just as the single dharma of the smṛtyupasthāna subsumes all the factors. Citing the text of the Treatise (Mahāprajñāpāramitopadeśa): "Since the smṛtyupasthāna subsumes the remaining factors, the remaining factors also subsume the smṛtyupasthāna." This is the path-factors in mutual subsumption, also not harmonization.