وَعَنْ عَمْرِو بْنِ الْعَاصِ رضى الله عنه
أَنَّهُ سَمِعَ رَسُولَ اَللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يَقُولُ: «إِذَا حَكَمَ اَلْحَاكِمُ، فَاجْتَهَدَ، ثُمَّ أَصَابَ، فَلَهُ أَجْرَانِ. وَإِذَا حَكَمَ، فَاجْتَهَدَ، ثُمَّ أَخْطَأَ، فَلَهُ أَجْرٌ»
He heard the Messenger of Allah (sallallahu alayhi wa sallam) say, “When a judge gives a ruling, having tried his best to decide correctly, and is right (in his decision), he will have a double reward; and when he gives a ruling having tried his best to decide correctly, and is wrong (in his decision), he will have a single reward.”.
Bulugh al-Maram 1582, Book 14, Judgments, Hadith 4. 1 min read