菩薩從兜術天降神母胎說廣普經 1.43

1.43

"To speak of nature, nature is itself empty; to speak of existence, existence is itself empty; to speak of nonexistence, nonexistence is itself empty. Nonexistence is itself eternally abiding, and nothing can cause it not to abide. To speak of abiding, abiding is itself empty. To speak of self-characteristics, self-characteristics are themselves empty. To speak of skandhas, the skandhas are themselves empty. To speak of the womb, the womb is itself empty; up to the bodhimaṇḍa, to speak of saṃskāra, the saṃskāra-skandha is empty. For this reason, Bhagavat, there is neither treading of the path nor non-treading of the path!"