‏البيوع : Hadeeth No:3914 Abu Qatada al-Ansari (Allaah be pleased with him) reported he heard Allaah's Messenger (sallAllaahu alayhi wa sallam) say: Beware of swearing; it produces a ready sale for a commodity, but blots out the blessing....

‏الهبات : Hadeeth No:3951 This hadith has been narrated on the authority of Zaid b. Aslam with the same chain of transmitters but with this (change) that the hadith transmitted on the authority of Malik and Rauh (he was the son of Qisirn) is more complete and lengthy....