大毘盧遮那成佛經疏 11.4

11.4

「虛空無垢無自性，能授種種諸巧智」者，謂一切智智之心等空，無垢、無量、無礙、無有分別，即是諸佛大空現證之法。無自性者，謂此空無垢清淨法界，亦復無有自性，不可執取也。以如是即彼大空，無為亦無自性故，能生一切智智，即是巧智，智之異名也。若非巧智，豈能隨一切眾生種種心行，見其所樂見身，說其所宜聞法，稱其得解之機，皆悉不虛而入一切平等法界，即是巧中之極巧也。以平等空亦無自性，有相生滅亦復無性，故於法自在能生巧智，普與一切眾生之願。不可思議度量也。

Regarding "Space is immaculate and without intrinsic nature, / capable of bestowing all kinds of ingenious wisdom": the mind of sarvajñajñāna is equal to space—immaculate, immeasurable, unhindered, and without discrimination; this is the Dharma directly realized in the great emptiness of all buddhas. Without intrinsic nature means that this immaculate and pure dharmadhātu of emptiness also has no intrinsic nature and cannot be grasped. Because it is this very great emptiness, unconditioned and also without intrinsic nature, it can give birth to sarvajñajñāna, which is "ingenious wisdom," another name for wisdom. Were it not ingenious wisdom, how could it, in accordance with the various mental dispositions of all sentient beings, manifest the bodies they delight to see, speak the teachings they ought to hear, and match their capacities for understanding, so that all enter the universal dharmadhātu without failure? This is the utmost ingenuity among ingenuities. Because equal emptiness has no intrinsic nature, and the arising and cessation of characteristics are also without nature, it has mastery over phenomena and can generate ingenious wisdom, universally granting the wishes of all sentient beings. It is inconceivable and beyond measure.