Quran 7:2 from Surah Al-A'raaf on Divine Marvels.
كِتَٰبٌ أُنزِلَ إِلَيۡكَ فَلَا يَكُن فِي صَدۡرِكَ حَرَجٞ مِّنۡهُ لِتُنذِرَ بِهِۦ وَذِكۡرَىٰ لِلۡمُؤۡمِنِينَ
English translation: A Book revealed to you so (let) not be in your breast any uneasiness from it that you warn with it and a reminder for the believers
Transliteration: kitabun unzila ilayka fala yakun fi sadrika harajun min'hu litundhira bihi wadhik'ra lil'mu'minina