Mishkat al-Masabih 18 The Offices of Commander and Qadi كتاب الإمارة والقضاء 81

وَعَنْ سَعِيدِ بْنِ الْمُسَيَّبِ: أَنَّ مُسْلِمًا وَيَهُودِيًّا اخْتَصَمَا إِلَى عُمَرَ فَرَأَى الْحَقَّ لِلْيَهُودِيِّ فَقَضَى لَهُ عُمَرُ بِهِ فَقَالَ لَهُ الْيَهُودِيُّ: وَاللَّهِ لَقَدْ قَضَيْتَ بِالْحَقِّ فَضَرَبَهُ عُمَرُ بِالدِّرَّةِ وَقَالَ: وَمَا يُدْريكَ؟ فَقَالَ الْيَهُودِيُّ: وَاللَّهِ إِنَّا نَجِدُ فِي التَّوْرَاةِ أَنَّهُ لَيْسَ قَاضٍ يَقْضِي بِالْحَقِّ إِلَّا كَانَ عَنْ يَمِينِهِ مَلَكٌ وَعَنْ شِمَالِهِ مَلَكٌ يُسَدِّدَانِهِ وَيُوَفِّقَانِهِ لِلْحَقِّ مَا دَامَ مَعَ الْحَقِّ فَإِذَا تركَ الحقَّ عرَجا وترَكاهُ. رَوَاهُ مَالك

Said b. al-Musayyib told that a Muslim and a Jew brought a dispute before ‘Umar, and as he considered the Jew was in the right he pronounced judgment in his favour; but when the Jew said, “I swear by God that you have pronounced just judgment,” he struck him with the whip and asked him what caused him to know that. The Jew replied, “I swear by God that we find in the Torah that no qadi judges rightly without having an angel at his right hand and an angel at his left who direct him and dispose him to what is right as long as he adheres to the right; but when he abandons the right they ascend and leave him.” Malik transmitted it.