首楞嚴義疏注經 9.175

9.175

此顯悟也。飾，亦修也。㳷，合也。一法界心生佛同體，佛究竟證，菩薩、羅漢亦已分證。今三昧者同彼所證，融合一體，妄處全覺，故云當處湛然。

This reveals awakening. 'To adorn' (飾) also means to cultivate. 'Unified and merged' (㳷) means to unite. The one mind of the dharmadhātu is identical in substance for sentient beings and Buddhas; the Buddhas have ultimately realized it, and bodhisattvas and arhats have also partially realized it. Now this practitioner of samādhi is identical to what they have realized, fused into a single substance; where delusion was is now entirely enlightenment, hence it says, 'at that very place is limpid and still.'