Daniel 10:5 Midrash

וָאֶשָּׂ֤א אֶת־עֵינַי֙ וָאֵ֔רֶא וְהִנֵּ֥ה אִישׁ־אֶחָ֖ד לָב֣וּשׁ בַּדִּ֑ים וּמָתְנָ֥יו חֲגֻרִ֖ים בְּכֶ֥תֶם אוּפָֽז׃

I lifted up mine eyes, and looked, and behold a man clothed in linen, whose loins were girded with fine gold of Uphaz;