Quran 5:43 — The Feast (Al-Ma'edah)

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.

[5:42] 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.

[5:44] We have sent down the Torah,* containing guidance and light. Ruling in accordance with it were the Jewish prophets, as well as the rabbis and the priests, as dictated to them in GOD's scripture, and as witnessed by them. Therefore, do not reverence human beings; you shall reverence Me instead. And do not trade away My revelations for a cheap price. Those who do not rule in accordance with GOD's revelations are the disbelievers.