तद्व्यक्षरत्तदादित्यमभितोऽश्रयत्तद्वा एतद्यदेतदादित्यस्य रोहितं रूपम् ॥ ४ ॥
In plain words
That essence flowed forth and sheltered around the sun. Indeed, this is what appears as the red 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 red form of the sun.