﴿ فَلَمَّا رَءَا ٱلشَّمْسَ بَازِغَةًۭ قَالَ هَٰذَا رَبِّى هَٰذَآ أَكْبَرُ ۖ فَلَمَّآ أَفَلَتْ قَالَ يَٰقَوْمِ إِنِّى بَرِىٓءٌۭ مِّمَّا تُشْرِكُونَ ﴾

“Then, when he beheld the sun rising, he said, "This is my Sustainer! This one is the greatest [of all]!" - but when it [too] went down, he exclaimed: "O my people! Behold, far be it from me to ascribe divinity, as you do, to aught beside God!”

Please check ayah 6:79 for complete tafsir.