Narrated Abu Bakrah (RA):
I heard Allah's Messenger (ﷺ) say, "No judge should give judgement between two people while he is angry."[Agreed upon]. (AR)
Reference (AR): Bulugh al-Maram 1401 (AR)
In-book reference (AR): Book 14, Hadith 5 (AR)
English translation (AR): Book 14, Hadith 1401 (AR)