‏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....

‏الهبات : Hadeeth No:3969 Nu'man b. Bashir (Allaah be pleased with them) reported: My father took me to Allaah's Messenger (sallAllaahu alayhi wa sallam) and said: Allaah's Messenger, bear witness that I have given such and such gift to Nu'man from my property, whereupon he (the Prophet) said: Have you conferred upon all of ...