Sunan Ibn Majah
2316
Sahih+3

It was narrated from 'Abdul-Malik bin 'Umair that he heard 'Abdur-Rahman bin Abu Bakrah (narrate) from his father that the Messenger of Allah (ﷺ) said:“Let the judge (Qadi) not pass a judgment when he is angry.”

SahihAl-Albani
SahihMuhammad Fouad Abd al-Baqi