(7) باب كَرَاهَةِ قَضَاءِ الْقَاضِي وَهُوَ غَضْبَانُ
Abd al-Rahman b. Abu Bakra reported:
My father dictated (and I wrote for him) to Ubaidullah b. Abu Bakra while he was the judge of Sijistan: Do not judge between two persons when you are angry, for I have heard Allah's Messenger (ﷺ) as saying: None of you should judge between two persons when he is angry.
Reference: Sahih Muslim 1717 a
In-book reference: Book 30, Hadith 21
USC-MSA web (English) reference(deprecated numbering scheme): Book 18, Hadith 4264