Musnad Abu Ya'la al-Mawsili 150:196

Umayyah ibn Bistam narrated to us, Yazid ibn Zuray' narrated to us, Rawh ibn al-Qasim narrated to us, from 'Amr ibn Dinar, who said: 'Aishah said: "I have never seen anyone more truthful than Fatimah, other than her father." And there was something between them, so he said: "O Messenger of Allah, ask her, for she does not lie."