‏البيوع : Hadeeth No:3900 Abu Huraira (Allaah be pleased with him) reported: There came a person demanding a camel from Allaah's Messenger (sallAllaahu alayhi wa sallam). He (the Prophet) said: Give him (the camel) of that age or of more mature age, and said: Best among you is one who is best in clearing off the debt....

‏الصلاة : Hadeeth No:855 Anas b. Malik reported. The Messenger of Allaah (sallAllaahu alayhi wa sallam) said: Perform bowing and prostration well. By Allaah. I see you even if you are behind me, or he said'. (1 see you) behind my back when you bow or prostrate....