‏البيوع : Hadeeth No:3862 Abd al-Rabman b. Abu Bakra said: Allaah's Messenger (sallAllaahu alayhi wa sallam) prohibited us. The rest of the hadith is the same....

‏البر والصلة والآداب‏ : Hadeeth No:6213 Abu Huraira reported Allaah's Messenger (sallAllaahu alayhi wa sallam) as saying: There should be no estranged relations beyond three days....