Narrated `Amr bin Al-`As:
That he heard Allah's Messenger (ﷺ) saying, "If a judge gives a verdict according to the best of his knowledge and his verdict is correct (i.e. agrees with Allah and His Apostle's verdict) he will receive a double reward, and if he gives a verdict according to the best of his knowledge and his verdict is wrong, (i.e. against that of Allah and His Apostle) even then he will get a reward ."
Reference | : Sahih al-Bukhari 7352 |
In-book reference | : Book 96, Hadith 79 |
USC-MSA web (English) reference | : Vol. 9, Book 92, Hadith 450 |
(deprecated numbering scheme) |