O people that is inhabitants of Mecca there has come to you an admonition from your Lord a Book which contains mention of that which is permissible for you and that which is enjoined on you and this Book is the Qur’ān; and a healing a cure for what is in the breasts of corrupt beliefs and uncertainties and a guidance from error and a mercy for those who believe in it.
- 10:5757
يَا أَيُّهَا النَّاسُ قَدْ جَاءَتْكُمْ مَوْعِظَةٌ مِنْ رَبِّكُمْ وَشِفَاءٌ لِمَا فِي الصُّدُورِ وَهُدًى وَرَحْمَةٌ لِلْمُؤْمِنِينَ
O men, a warning has come to you from your Lord, a remedy for the (doubts) of the heart, and a guidance and grace for those who believe.
- common.revelation-Meccan
- common.hizb : 86