Musnad Ahmad 1153:451

Sulayman ibn Dawud narrated to us, 'Amr ibn al-'Ala' al-Shanni, from 'Abd al-Qays, said: Salih ibn Sarj narrated to me, 'Imran ibn Hattan narrated to me, saying: I entered upon 'Aishah and discussed with her until we mentioned the judge. 'Aishah said: I heard the Messenger of Allah, peace and blessings of Allah be upon him, say: "There shall surely come upon the just judge on the Day of Resurrection a moment when he will wish that he had never judged between two people, even over a single date."