‏الطهارة : Hadeeth No:519 Anas b. Malik reported: The Messenger of Allaah (sallAllaahu alayhi wa sallam) went to a far-off place in the desert (hidden from the sight of human beings) for relieving himself. Then I brought water for him and he cleansed himself....

‏البيوع : Hadeeth No:3796 Abu Huraira (Allaah be pleased with him) reported Allaah's Messenger (sallAllaahu alayhi wa sallam) as saying: Delay (in the payment of debt) on the part of a rich man is injustice, and when one of you is retired to a rich man, he should follow him....