The works of Ādi Śaṅkarācārya

Viṣṇusahasranāmastotram

Verse 89

सितनीलादिभेदेन यथैकं दृश्यते नभः ।भ्रान्तदृष्टिभिरात्मापि तथैकः सन्पृथक्पृथक् ॥

In plain words

One sky — and by white, blue, and the rest it is seen as many. The Self is one in just that way, and to deluded eyes it appears separate, and separate, and separate again.

Close to the Sanskrit

Just as, through the difference of white, blue and the rest, the one sky is seen [as many], so too the Self, though being one, [is seen] separately and separately by deluded sights.