華嚴經旨歸 1.33

1.33

初、用周無礙者，於上念劫剎塵等處，盧舍那佛顯法界身雲業用無邊，周側如上一一塵剎、一一念劫，攝生威儀或現八相、或三乘形，或五趣身、或六塵境，身雲差別，名號不同，業用多端，不可稱說。《華嚴．佛境界分》云「盧舍那佛於一塵中，示現十佛世界微塵數等多威儀路以攝眾生，如一塵，一切塵亦爾；如一佛，一切佛亦爾。」故知如是應機現身，無盡無盡不可說也。又云「如此見佛坐師子座，一切塵中亦復如是。」

First, "unobstructed pervasiveness of function" means that in the aforementioned thought-moments, kalpas, lands, atoms, and so forth, Rocana Buddha manifests the boundless karmic functions of his dharmadhātu body-cloud, spreading across each atom, land, thought-moment, and kalpa as above; in the deportment of gathering sentient beings, he manifests either the eight aspects, or forms of the three vehicles, or bodies of the five destinies, or sense realms of the six dusts. The clouds of bodies are distinct, the names are not the same, and the karmic functions are multifaceted and impossible to fully describe. The "Section on the Buddha's Realm" in the Avataṃsaka states: 'Within a single atom, Rocana Buddha displays multiple avenues of deportment equal in number to the subtle atoms of ten Buddha worlds in order to gather sentient beings; as with one atom, all atoms are likewise; as with one Buddha, all Buddhas are likewise.' Therefore we know that manifesting bodies according to capacities is thus endless, inexhaustible, and ineffable. It also says: 'Just as the Buddha is seen sitting on the lion throne here, so it is in all atoms.'"