Proverbs 21:20 The wise have wealth and luxury, but fools spend whatever they get.
God blesses when we use what He gives us wisely! I believe that this verse is telling up to put our money back for rainy days, or grand opportunities. Either way we are to be wise with our money and not spend it all. We are to be careful... we are to plan for the future. We are to give back to God the part that is His. When we show God that we are wise with what He has blessed us with, then God will bless us with more.