金師子章雲間類解 1.44

1.44

色是幻色，不礙於空，則涉有一道清淨也。總而辨之，先約性相不變隨緣，以揀斷實；後約不住生死涅槃，以明悲智。

Form is illusory form, which does not obstruct emptiness; thus, engaging in existence, the single path is pure. Distinguishing them as a whole: first, in terms of nature and characteristics being unchanging yet following conditions, so as to exclude annihilation and realness; later, in terms of not abiding in saṃsāra or nirvāṇa, so as to clarify compassion and wisdom.