Al-Ma'idah 5:48 وانزلنا اليك الكتاب بالحق مصدقا لما بين يديه من الكتاب ومهيمنا عليه فاحكم بينهم بما انزل الله ولا تتبع اهواءهم عما جاءك من الحق لكل جعلنا منكم شرعة ومنهاجا ولو شاء الله لجعلكم امة واحدة ولاكن ليبلوكم في ما اتاكم فاستبقوا الخيرات الى الله مرجعكم جميعا فينبيكم بما كنتم فيه تختلفون ٤٨

We have sent down to you the Book with truth, confirming the Book before it, and a protector for it. So, judge between them according to what Allah has sent down, and do not follow their desires against the truth that has come to you. For each of you We have made a law and a method. Had Allah willed, He would have made a single community of people, but (He did not), so that He may test you in what He has given to you. Strive, then, to excel each other in good deeds. To Allah is the return for all of you. Then Allah shall tell you about that in which you disputed.