‏الزكاة : Hadeeth No:2282 Anas reported Allaah's Messenger (sallAllaahu alayhi wa sallam) as saying: If the son of Adam were to possess two valleys of riches. he would long for the third one. And the stomach of the son of Adam is not filled but with dust. And Allaah returns to him who repents....

‏الصيام : Hadeeth No:2487 'A'isha (Allaah be pleased with her) reported that Hamza b. 'Amr al-Aslami asked the Messenger of Allaah (sallAllaahu alayhi wa sallam) about fasting on a journey, and he (the Prophet) said: Fast if you like and break it if you like....