Quran 6:77 from Surah Al-An'aam on Divine Marvels.
فَلَمَّا رَءَا ٱلۡقَمَرَ بَازِغٗا قَالَ هَٰذَا رَبِّيۖ فَلَمَّآ أَفَلَ قَالَ لَئِن لَّمۡ يَهۡدِنِي رَبِّي لَأَكُونَنَّ مِنَ ٱلۡقَوۡمِ ٱلضَّآلِّينَ
English translation: When he saw the moon rising he said This (is) my Lord But when it set he said If (does) not guide me my Lord I will surely be among the people who went astray
Transliteration: falamma raa al-qamara bazighan qala hadha rabbi falamma afala qala la-in lam yahdini rabbi la-akunanna mina al-qawmi al-dalina