Quran 5:42 — The Feast (Al-Ma'edah)

They are upholders of lies, and eaters of illicit earnings. If they come to you to judge among them, you may judge among them, or you may disregard them. If you choose to disregard them, they cannot harm you in the least. But if you judge among them, you shall judge equitably. GOD loves those who are equitable.

[5:41] O you messenger, do not be saddened by those who hasten to disbelieve among those who say, "We believe," with their mouths, while their hearts do not believe. Among the Jews, some listened to lies. They listened to people who never met you, and who distorted the words out of context, then said, "If you are given this, accept it, but if you are given anything different, beware." Whomever GOD wills to divert, you can do nothing to help him against GOD. GOD does not wish to cleanse their hearts. They have incurred humiliation in this world, and in the Hereafter, they will suffer a terrible retribution.

[5:43] Why do they ask you to judge among them, when they have the Torah, containing GOD's law, and they chose to disregard it? They are not believers.