‏البيوع : Hadeeth No:3712 Jabir b. Abdullah (Allaah be pleased with them) reported Allaah's Messenger (sallAllaahu alayhi wa sallam) forbidding Muhaqala and Muzabana and Mu'awama and Mukhabara. (One of the narrators) 'said: Sale years ahead is Mu'awama, and making exceptional but he made an exemption of araya....

‏الصلاة : Hadeeth No:1901 Jabir b. 'Abdullah said that the Prophet of Allaah (sallAllaahu alayhi wa sallam) delivered the sermon and said: When any one of you comes for the Friday (prayer) and the Imam comes out (from his apartment), (even then) should observe two rak'ahs (of prayer)....