大乘義章 3.66

3.66

次辨一異。分末異本，得言是異；攝末從本，得言是一。以是一故，一切諸法皆一心作，如夢中事皆睡心作。一異如是（此二門竟）。

Next is distinguishing their oneness and difference. If one divides the branch as different from the root, one can say that they are different; if one subsumes the branch into the root, one can say that they are one. Because they are one, all dharmas are made by the one mind, just as the occurrences in a dream are all made by the sleeping mind. Oneness and difference are thus. (This second section is concluded.)