Behold, [O believers,] it is you who are called upon to spend freely in God's cause: but [even] among you are such as turn out to be niggardly! And yet, he who acts niggardly [in God's cause] is but niggardly towards his own self: for God is indeed self-sufficient, whereas you stand in need [of Him]; and if you turn away [from Him], He will cause other people to take your place, and they will not be the likes of you!