4:60
أَلَمْ تَرَ إِلَى ٱلَّذِينَ يَزْعُمُونَ أَنَّهُمْ ءَامَنُوا۟ بِمَآ أُنزِلَ إِلَيْكَ وَمَآ أُنزِلَ مِن قَبْلِكَ يُرِيدُونَ أَن يَتَحَاكَمُوٓا۟ إِلَى ٱلطَّٰغُوتِ وَقَدْ أُمِرُوٓا۟ أَن يَكْفُرُوا۟ بِهِۦ وَيُرِيدُ ٱلشَّيْطَٰنُ أَن يُضِلَّهُمْ ضَلَٰلًۢا بَعِيدًۭا
Have you not seen those who claim to have believed in what was revealed to you, [O Muhammad], and what was revealed before you? They wish to refer legislation to Taghut, while they were commanded to reject it; and Satan wishes to lead them far astray.
Translation · Saheeh International
Tafsir
Ibn Kathīr (abridged)
Referring to Other than the Qur'an and Sunnah for Judgment is Characteristic of Non-Muslims
Allah chastises those who claim to believe in what Allah has sent down to His Messenger and to the earlier Prophets, yet they refer to other than the Book of Allah and the Sunnah of His Messenger for judgment in various disputes. It was reported that the reason behind revealing this Ayah was that a man from the Ansar and a Jew had a dispute, and the Jew said, "Let us refer to Muhammad to judge between us." However, the Muslim man said, "Let us refer to Ka`b bin Al-Ashraf (a Jew) to judge between us." It was also reported that the Ayah was revealed about some hypocrites who pretended to be Muslims, yet they sought to refer to the judgment of Jahiliyyah. Other reasons were also reported behind the revelation of the Ayah. However, the Ayah has a general meaning, as it chastises all those who refrain from referring to the Qur'an and Sunnah for judgment and prefer the judgment of whatever they chose of falsehood, which befits the description of Taghut here. This is why Allah said,
يُرِيدُونَ أَن يَتَحَاكَمُواْ إِلَى الطَّـغُوتِ
(and they wish to go for judgment to the Taghut) until the end of the Ayah. Allah's statement,
يَصُدُّونَ عَنكَ صُدُوداً
(turn away from you with aversion) means, they turn away from you in arrogance, just as Allah described the polytheists,