‏الأضاحي : Hadeeth No:4831 Al-Bara' b. 'Azib reported that Abu Burda slaughtered the animal as a sacrifice before the ('Id) prayer. Thereupon Allaah's Prophet (sallAllaahu alayhi wa sallam) said: Offer a substitute for it (since it does not absolve you of the responsibility of sacrifice). Thereupon he said: Allaah's Messenger...

‏البيوع : Hadeeth No:3622 Ibn Umar (Allaah be pleased with them) reported that Allaah's Messenger (sallAllaahu alayhi wa sallam) forbade the outbidding (against another)....