An-Nahl 16:64

Wama anzalna AAalayka alkitabailla litubayyina lahumu allathee ikhtalafoo feehiwahudan warahmatan liqawmin yu/minoon

And We have not revealed to you the Book, [O Muḥammad], except for you to make clear to them that wherein they have differed and as guidance and mercy for a people who believe.

We have sent down the Book to you, only because you may explain to them what they differed about, and (so that it may be) guidance and mercy for a people who believe.