The intelligent person is not one who merely knows what is good and what is bad. The intelligent person is one who, when he sees what is good, follows it, and when he sees evil, shuns it.
The believer speaks little and does a lot, whereas the hypocrite speaks a lot and does little. When the believer speaks, it is with wisdom, when he is silent, it is in deep thought, when he sees, he takes lessons, and when he acts, it is a cure. If this is the way you are, then you are in the constant worship [of your Lord.]
It is reported from 'Ubayd ibn 'Umayr (radiAllahu anhu) that he said: "It used to be said when winter came: O people of the Qur`an, the night has become long so you can pray (more) and the day has become short for you to fast."
By He in whose Hand is my soul, I have lived amongst people who never ordered food to be prepared for themselves If [food] was presented to one of them, he would eat, otherwise, he would be silent; and he would not care if it was hot or cold.