Qur'an 17:82

وَنُنَزِّلُ مِنَ ٱلْقُرْءَانِ مَا هُوَ شِفَآءٌ وَرَحْمَةٌ لِّلْمُؤْمِنِينَ ۙ وَلَا يَزِيدُ ٱلظَّـٰلِمِينَ إِلَّا خَسَارًا

“And We send down of the Qur’ān that which is healing and mercy for the believers, but it does not increase the wrongdoers except in loss.”

Al-Israa 17:82 · Saheeh International