‏البيوع : Hadeeth No:3873 Abu Sa'id (Allaah be pleased with him) reported: We were given to eat, during the lifetime of Allaah's Messenger (sallAllaahu alayhi wa sallam), dates of different qualities mixed together, and we used to sell two sa's of these for one sa, (of fine quality of dates). This reached Allaah's Messenger ...

‏الأقضية : Hadeeth No:4258 A hadith like this has been trransmitted on the authority of Mansur with a slight vairiation of words....