‏البيوع : Hadeeth No:3906 Ibn 'Abbas (Allaah be pleased with them) reported that when Allaah's Prophet (sallAllaahu alayhi wa sallam) came to Medina, they were paying one and two years in advance for fruits, so he said: Those who pay in advance for anything must do so for a specified weight and for a definite time....

‏الإيمان : Hadeeth No:9 It is reported on the authority of Anas b. Malik that he said: We were forbidden that we should ask anything (without the genuine need) from the Prophet. It, therefore, pleased us that an intelligent person from the dwellers of the desert should come and asked him (the Prophet) and we should listen ...