‏الطهارة : Hadeeth No:471 Abu Huraira reported: Allaah's Prophet (sallAllaahu alayhi wa sallam) saw a man who did not wash his heel and he remarked: Woe to the heels because of hell-fire....

‏البيوع : Hadeeth No:3727 Jabir (Allaah be pleased with him) reported Allaah's Messenger (sallAllaahu alayhi wa sallam) forbidding the selling (renting of) uncultivated land for two years or three....