請觀音經疏 1.23

1.23

恒以大悲者，是歎也。三聖俱有大悲俱憫俱救，然而別說如來，以大悲為法身之境，觀音為智照，大勢為福力冥熏，然而皆具悲憫救濟也。

As for "always with great compassion": this is praise. All three sages possess great compassion, all have pity, and all rescue; nevertheless, speaking specifically, the Tathāgata takes great compassion as the realm of the dharmakāya, Guanyin as the illumination of wisdom, and Mahāsthāmaprāpta as the covert perfuming of the power of merit; yet all are fully endowed with compassionate pity and salvific aid.