大方廣圓覺修多羅了義經略疏 1.229

1.229

隨順不二也，西域語倒，譯者迴文不盡故也。生死、涅槃為二，凡夫順生死，二乘趣涅槃，今皆不住，故云隨順。又依報則淨、穢不二，正報則生、佛不二，克體則身、心不二，通該則自、他不二，與此相應是隨順矣。

That is, according with non-duality. The syntax of the Western Regions is inverted, and the translator did not completely reorder the text. Saṃsāra and nirvāṇa constitute duality; ordinary persons accord with saṃsāra, while followers of the two vehicles tend toward nirvāṇa. Here, resting in neither, it is called "accord". Furthermore, in terms of the environmental recompense, purity and defilement are non-dual; in terms of the primary recompense, sentient beings and buddhas are non-dual; strictly in terms of the substance, body and mind are non-dual; universally speaking, self and other are non-dual. To correspond with this is "accord".