‏البيوع : Hadeeth No:3617 Ibn 'Umar (Allaah be pleased with them) reported Allaah's Messenger (sallAllaahu alayhi wa sallam) as having said this: One amongst you should not enter into a transaction when another is bargaining....

‏النكاح : Hadeeth No:3342 Ibn 'Umar (Allaah be pleated with them) reported Allaah's Messenger (sallAllaahu alayhi wa sallam) having said: He who is invited to a wedding feast or like it, he should accept it....