‏النكاح : Hadeeth No:3287 Ibn Umar (Allaah be pleased with them) reported Allaah's Prophet (sallAllaahu alayhi wa sallam) as having said this: A person should not enter into a transaction when his brother (had already entered into but not finalised), and he should not make proposal of marriage upon the proposal already made ...

‏الصلاة : Hadeeth No:1835 'Abdullah (b. Umar) reported on the authority of his father that he beard like this from the Messenger of Allaah (sallAllaahu alayhi wa sallam)....