Quran 39:23 from Surah Az-Zumar on Divine Marvels.
ٱللَّهُ نَزَّلَ أَحۡسَنَ ٱلۡحَدِيثِ كِتَٰبٗا مُّتَشَٰبِهٗا مَّثَانِيَ تَقۡشَعِرُّ مِنۡهُ جُلُودُ ٱلَّذِينَ يَخۡشَوۡنَ رَبَّهُمۡ ثُمَّ تَلِينُ جُلُودُهُمۡ وَقُلُوبُهُمۡ إِلَىٰ ذِكۡرِ ٱللَّهِۚ ذَٰلِكَ هُدَى ٱللَّهِ يَهۡدِي بِهِۦ مَن يَشَآءُۚ وَمَن يُضۡلِلِ ٱللَّهُ فَمَا لَهُۥ مِنۡ هَادٍ
English translation: Allah has revealed (the) best (of) [the] statement a Book (its parts) resembling each other oft-repeated Shiver from it (the) skins (of) those who fear their Lord then relax their skins and their hearts at (the) remembrance (of) Allah That (is the) guidance (of) Allah He guides with it whom He wills And whoever Allah lets go astray Allah lets go astray then not for him any guide
Transliteration: al-lahu nazzala ahsana al-hadithi kitaban mutashabihan mathaniya taqsha'irru min'hu juludu alladhina yakhshawna rabbahum thumma talinu juluduhum waqulubuhum ila dhik'ri al-lahi dhalika huda al-lahi yahdi bihi man yashau waman yud'lili al-lahu fama lahu min hadin