An-Nahl - 16:64

وَمَا أَنزَلْنَا عَلَيْكَ الْكِتَابَ إِلاَّ لِتُبَيِّنَ لَهُمُ الَّذِي اخْتَلَفُواْ فِيهِ وَهُدًى وَرَحْمَةً لِّقَوْمٍ يُؤْمِنُونَ
[16:64]
And We have not revealed to you the Book except that you may make clear to them that about which they differ, and (as) a guidance and a mercy for a people who believe.
And We sent down the Book to thee for the express purpose, that thou shouldst make clear to them those things in which they differ, and that it should be a guide and a mercy to those who believe.
And We have revealed the Scripture unto thee only that thou mayst explain unto them that wherein they differ, and (as) a guidance and a mercy for a people who believe.