Quran 4:146 from Surah An-Nisaa on Divine Marvels.
إِلَّا ٱلَّذِينَ تَابُواْ وَأَصۡلَحُواْ وَٱعۡتَصَمُواْ بِٱللَّهِ وَأَخۡلَصُواْ دِينَهُمۡ لِلَّهِ فَأُوْلَٰٓئِكَ مَعَ ٱلۡمُؤۡمِنِينَۖ وَسَوۡفَ يُؤۡتِ ٱللَّهُ ٱلۡمُؤۡمِنِينَ أَجۡرًا عَظِيمٗا
English translation: Except those who repent and correct (themselves) and hold fast to Allah and are sincere (in) their religion for Allah then those (will be) with the believers And soon will be given (by) Allah the believers a reward great
Transliteration: illa alladhina tabu wa-aslahu wa-i'tasamu bil-lahi wa-akhlasu dinahum lillahi fa-ulaika ma'a al-mu'minina wasawfa yu'ti al-lahu al-mu'minina ajran aziman