Tosefta for Psalms 136:8

אֶת־הַ֭שֶּׁמֶשׁ לְמֶמְשֶׁ֣לֶת בַּיּ֑וֹם כִּ֖י לְעוֹלָ֣ם חַסְדּֽוֹ׃

The sun to rule by day, For His mercy endureth for ever;