Surah Al-A'raf, Verse 2

كِتَٰبٌ أُنزِلَ إِلَيۡكَ فَلَا يَكُن فِي صَدۡرِكَ حَرَجٞ مِّنۡهُ لِتُنذِرَ بِهِۦ وَذِكۡرَىٰ لِلۡمُؤۡمِنِينَ٢

kitābun unzila ilayka falā yakun fī ṣadrika ḥarajun min'hu litundhira bihi wadhik'rā lil'mu'minīna

[This is] a Book revealed to you, [O Muḥammad] - so let there not be in your breast distress therefrom - that you may warn thereby and as a reminder to the believers.