The works of Ādi Śaṅkarācārya

Advaitānubhūtiḥ

Verse 72

स्फटिके रक्तता यद्वदुपाधेर्नीलताम्बरे ।यथा जगदिदं भाति तथा सत्यमिवाद्वये ॥ ७० ॥

In plain words

Redness in a crystal; blue in the open sky — both lent by something standing near. Just so, this world shines in the One without a second, looking real.

Close to the Sanskrit

Just as redness in a crystal, and blueness in the sky, from a limiting adjunct — so, in the way this world appears, it appears as if real in the non-dual.