The works of Ādi Śaṅkarācārya

Sanatsujātīyam

p. 307

p. 307

पश्यन्ति चैनं सुसमिद्धसत्त्वाः ।

In plain words

And they do see him — the ones in whom sattva has caught fire and burns clear.

Close to the Sanskrit

And him they see, those whose sattva is well-kindled.