Quran 17:82 from Surah Al-Israa on Divine Marvels.
وَنُنَزِّلُ مِنَ ٱلۡقُرۡءَانِ مَا هُوَ شِفَآءٞ وَرَحۡمَةٞ لِّلۡمُؤۡمِنِينَ وَلَا يَزِيدُ ٱلظَّٰلِمِينَ إِلَّا خَسَارٗا
English translation: And We reveal from the Quran that it (is) a healing and a mercy for the believers but not it increases the wrongdoers except (in) loss
Transliteration: wanunazzilu mina al-qur'ani ma huwa shifaon warahmatun lil'mu'minina wala yazidu al-zalimina illa khasaran