‏البيوع : Hadeeth No:3871 Abd Sa'id reported: Bilal (Allaah be pleased with him) came with fine quality of dates. Allaah's Messenger (sallAllaahu alayhi wa sallam) said to him: From where (you have brought them)? Bilal said: We had inferior quality of dates and I exchanged two sa's (of inferior quality) with one sa (of fine ...

‏البر والصلة والآداب‏ : Hadeeth No:6309 'Abdullah reported Allaah's Messenger (sallAllaahu alayhi wa sallam) as saying: It is obligatory for you to tell the truth, for truth leads to virtue and virtue leads to Paradise, and the man who continues to speak the truth and endeavours to tell the truth is eventually recorded as truthful with Al...