‏الأيمان : Hadeeth No:4057 'Adi b. Hatim reported Allaah's Messenger (sallAllaahu alayhi wa sallam) as saying: He who took an oath, but he found something else better than that, should do that which is better and break his oath....

‏فضائل الصحابة‏ : Hadeeth No:5940 'Abdullah b. Zubair reported on the Day of the Battle of the Trench: I and Umar b. Abu Salama were with women folk in the fort of Hassan (b. Thabit). He at one time leaned for me and I cast a glance and at anothertime I leaned for him and he would see and I recognised my father as he rode on his hor...