大方廣佛華嚴經隨疏演義鈔 20.36

20.36

第三三禪。疏「光影之言略有二」者，賢首更有一義，今不存之，故云略也。彼釋云「謂如明淨物得日光曜，於屋壁上有光影現。如來應機現身亦爾。然有多義：一緣集義，謂大智明淨，悲願日照，於眾生陰室之內現於佛影。二速疾義，無遠不至故。三無礙義，不可執持故。四有用義，能破暗故。五無生義，無所有故。廣如〈十忍品〉說。」此義似有穿鑿，故略不存。今疏所明二影者，然《攝論》影略有三：一映質影、二水月影、三鏡像影，廣如〈十忍品〉。今是前二，今云光影，故略鏡像，正是初義。所日喻如來身，樹等形質以喻眾生。日無異體、質有萬差。樹側影斜、形端影正。影不現於日內，但在質邊。弄影多端，隨心萬品。二水月影，以月有光亦名光影。「影多似月」者，如月圓缺故。「少似於水」者，隨動靜故。

Third, the Third Dhyāna. Regarding the Commentary's statement, "As for the words 'light and shadow', there are briefly two": Xianshou had yet another meaning, which is not preserved here; hence it says "briefly." His explanation states: "For example, when a bright and clean object catches the sunlight, a light and shadow appears upon the house wall. The Tathāgata's manifesting a body in response to capacities is also like this. However, it has multiple meanings: 1. The meaning of aggregation of conditions, meaning that great wisdom is pure and clear, and the sun of compassion and vows shines, manifesting the Buddha's shadow within the dark chamber of sentient beings. 2. The meaning of swiftness, because there is nowhere distant it does not reach. 3. The meaning of unobstructedness, because it cannot be grasped or held. 4. The meaning of efficacious function, because it can destroy darkness. 5. The meaning of non-arising, because it has no existence. This is explained at length as in the 'Chapter on the Ten Kṣāntis'." This interpretation seems somewhat forced, so it was abridged and not preserved. As for the two shadows clarified now in the Commentary: the Mahāyānasaṃgraha briefly presents three shadows: 1. the shadow reflecting the physical substance, 2. the shadow of the moon in water, and 3. the shadow in a mirror, as detailed in the 'Chapter on the Ten Kṣāntis'. Here it refers to the first two. Now speaking of "light and shadow," the mirror image is omitted, leaving precisely the first meaning. The sun serves as an analogy for the Tathāgata's body, while trees and other physical substances serve as an analogy for sentient beings. The sun has no differing essence, but physical substances have myriad variations. When a tree leans, its shadow is slanted; when a shape is upright, its shadow is straight. The shadow does not appear inside the sun, but only beside the physical substance. The playing of shadows takes many forms, varying in myriad ways according to the mind. Second is the shadow of the moon in water; because the moon has light, it is also called light and shadow. "The shadow mostly resembles the moon" because it follows the moon's fullness and waning. "It slightly resembles the water" because it conforms to movement and stillness.