Surah Ar-Ra'd, Verse 1
بِسْمِ ٱللَّهِ ٱلرَّحْمَٰنِ ٱلرَّحِيمِ الٓمٓر ۚ تِلْكَ ءَايَٰتُ ٱلْكِتَٰبِ ۗ وَٱلَّذِىٓ أُنزِلَ إِلَيْكَ مِن رَّبِّكَ ٱلْحَقُّ وَلَٰكِنَّ أَكْثَرَ ٱلنَّاسِ لَا يُؤْمِنُونَ
Translation — Sahih International
Alif, Lam, Meem, Ra. These are the verses of the Book; and what has been revealed to you from your Lord is the truth, but most of the people do not believe.
Source
Kur'an-ı Kerim, Ra'd Suresi 13:1
https://kuran.diyanet.gov.tr/mushaf/kuran-meal-2/13-suresi-1-ayet