Chastised for not Giving Money

What holds you back from giving in His cause, when all that is in the heavens and the earth belongs to Him? Those who gave and struggled before victory are greater in rank than those who did so later, yet to all, God has promised the best, and God is fully aware of what you do.

57:10And what aileth you that ye spend not in the way of Allah when unto Allah belongeth the inheritance of the heavens and the earth? Those who spent and fought before the victory are not upon a level (with the rest of you). Such are greater in rank than those who spent and fought afterwards. Unto each hath Allah promised good. And Allah is Informed of what ye do.