成唯識論述記 6.217

6.217

述曰：同體別體、有漏無漏、住持真行，所有三寶皆是彼攝，如真淨故。所餘是此真淨方便，亦名真淨。

The Commentary states: The Three Jewels—whether identical in substance or separate in substance, sāsrava or anāsrava, abiding or genuinely practiced—are all subsumed by this, because they are truly pure. Whatever remains serves as an expedient means toward this true purity, and is also called truly pure.