Whatever you get as extra tax return is yours, and if any thing of it is saved, it will be subject to zakah in future years along with your other savings (all in accordance to the rules of zakah).

• 像纳税申报单一样的任何东西都是你的，这些都保留的话，它将和你的其他（合乎天课法则的）存档一起影响未来几年的天课数额。