Jami' at-Tirmidhi 1323

حَدَّثَنَا هَنَّادٌ، حَدَّثَنَا وَكِيعٌ، عَنْ إِسْرَائِيلَ، عَنْ عَبْدِ الأَعْلَى، عَنْ بِلاَلِ بْنِ أَبِي مُوسَى، عَنْ أَنَسِ بْنِ مَالِكٍ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏ "‏ مَنْ سَأَلَ الْقَضَاءَ وُكِلَ إِلَى نَفْسِهِ وَمَنْ أُجْبِرَ عَلَيْهِ يُنْزِلُ اللَّهُ عَلَيْهِ مَلَكًا فَيُسَدِّدُهُ ‏"‏ ‏.‏

Anas bin Malik narrated that the Messenger of Allah (sallAllahu Alayhi wa sallam) said:"Whoever asks for a position as a judge, then he left on his own. And whoever is forced onto it, Allah sends an angel down to him so that he can be correct." (Daif)

Reference

Jami' at-Tirmidhi 1323

In-book

Book 15, Hadith 3