瑜伽論記 21.128

21.128

第九明如來所行如來境界二差別相。此中據緣諸佛淨土，名如來所行。據緣五無量境利益有情事，名如來境界。

Ninth, clarifying the two distinct characteristics of the sphere of activity of the Tathāgata and the cognitive domain of the Tathāgata: here, taking the pure lands of the Buddhas as the object is called the sphere of activity of the Tathāgata; taking the matters of the five immeasurable domains that benefit sentient beings as the object is called the cognitive domain of the Tathāgata.