Al-Ma'idah 5:48

Waanzalna ilayka alkitaba bilhaqqimusaddiqan lima bayna yadayhi mina alkitabiwamuhayminan AAalayhi fahkum baynahum bimaanzala Allahu wala tattabiAA ahwaahum AAammajaaka mina alhaqqi likullin jaAAalna minkumshirAAatan waminhajan walaw shaa AllahulajaAAalakum ommatan wahidatan walakin liyabluwakumfeema atakum fastabiqoo alkhayratiila Allahi marjiAAukum jameeAAan fayunabbi-okum bimakuntum feehi takhtalifoon

And We have revealed to you, [O Muḥammad], the Book [i.e., the Qur’ān] in truth, confirming that which preceded it of the Scripture and as a criterion over it. So judge between them by what Allāh has revealed and do not follow their inclinations away from what has come to you of the truth. To each of you We prescribed a law and a method. Had Allāh willed, He would have made you one nation [united in religion], but [He intended] to test you in what He has given you; so race to [all that is] good. To Allāh is your return all together, and He will [then] inform you concerning that over which you used to differ.

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.