仁王護國般若波羅蜜多經疏 3.168

3.168

解曰：令彼皆見凡聖相入，即第九十眾像入身、同類往趣二種變也，亦是能化神境智通自他勝劣塵沙身故。從此第四淨穢相容。

Explanation: Causing them all to see ordinary beings and sages entering one another refers to the ninth and tenth [types of transformation]: the entry of multitude forms into the body and proceeding to the same destinies. It is also because the transformative supernormal cognition enables one's own and others' bodies, superior and inferior, to be as many as dust and sands. Next, the fourth: the mutual inclusion of the pure and the defiled.