‏البيوع : Hadeeth No:3684 Zaid b. Thabit (Allaah be pleased with him) reported Allaah's Messenger (sallAllaahu alayhi wa sallam) granting concession in case of 'ariyya transactions and that implies selling of (dry dates for fresh dates) according to a measure....

‏البر والصلة والآداب‏ : Hadeeth No:6242 Abu Sa'id and abu Huraira reported that they heard Allaah's Messenger (sallAllaahu alayhi wa sallam) as saying: Never a believer is stricken with discomfort, hardship or illness, grief or even with mental worry that his sins are not expiated for him....