Bhāṣya
। । । — । । । ॥
In plain words
Just as the single sun shines reflected in both moving and still waters, appearing multiple and diverse while its true form remains entirely untouched by the water, so too the one ātman appears as many within the shifting, varied states of the intellect, yet remains completely independent of them. The sun does not merge with the ripples; it shines steadily in the open sky while merely appearing as a reflection in the water due to delusion. In the exact same way, the Self shines entirely apart from all mental modifications. That shining Self—separate, luminous, and whole—that I am.
Close to the Sanskrit
Just as in whatever manner the sun, being one, appears as many and diverse in moving and still waters, having a true nature not perceived as following them; alternatively, having formed a bahuvrihi compound and then a nañ compound, the meaning thus becomes: the sun is not followed by the waters; rather, shining precisely so in the sky, it is seen in the waters through delusion. Similarly, the one ātman, being many in moving, varied, and diversified intellects, having a true nature not perceived as following, does not follow the intellects. Rather, it shines entirely separate: that I am the ātman, this is the meaning.