17:82
وَنُنَزِّلُ مِنَ ٱلْقُرْءَانِ مَا هُوَ شِفَآءٌ وَرَحْمَةٌ لِّلْمُؤْمِنِينَ ۙ وَلَا يَزِيدُ ٱلظَّـٰلِمِينَ إِلَّا خَسَارًا
wanunazzilu mina l-qur'āni mā huwa shifāon waraḥmatun lil'mu'minīna walā yazīdu l-ẓālimīna illā khasāran
We send down the Quran as healing and mercy to those who believe; as for those who disbelieve, it only increases their loss.
And We send down of the Qur’ân that which is a healing and a mercy to those who believe (in Islâmic Monotheism and act on it), and it increases the Zâlimûn (polytheists and wrong-doers) nothing but loss.