Shatapatha Brahmana 9.5.1.37

9.5.1.37

sa yaḥ sa dhātāsau sa ādityaḥ | atha yattaddiśām paramaṃ krāntametattadyasminneṣa etatpratiṣṭhitastapati

Now the same as that Orderer is yonder sun; and that which was the farthest gone of the regions is that in which that (sun) shines firmly established.