Behold! You are those who are called to spend in the Cause of Allah, yet among you are some who are niggardly. And whoever is niggardly, it is only at the expense of his ownself. But Allah is Rich (Free of all wants), and you (mankind) are poor. And if you turn away (from Islam and the obedience of Allah), He will exchange you for some other people, and they will not be your likes.