तद्व्यक्षरत्तदादित्यमभितोऽश्रयत्तद्वा ए-तद्यदेतदादित्यस्य कृष्ण५ रूपम् ॥ ३ ॥
In plain words
That essence flowed forth and sheltered around the sun. Indeed, this is what appears as the dark form of the sun.
Close to the Sanskrit
That flowed forth; that approached the sun all around and sheltered. That indeed is this which is the dark form of the sun.