Do Muslims give away 2.5 percent of their income or their savings

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Yes every Muslim must pay Zakah every year , this Zahah is 2.5 of your money if your money increases to certain value , try to think what will happens if every person try to save his money , the economics of this country will be destroyed
because the selling and buying process will be semi stop and this country will have alot of money without any product ,

and also it decreases the greed .