One should give a khums on savings and gold or all the remaining ration like wheat rice of my family

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Khums must be paid on seven things:
1. War booty
2. Mineral wealth
3. Buried treasures
4. [Wealth from] diving
5. Licit wealth mixed with illicit wealth
6. Land purchased by a non-Muslim citizen (dhimmi¯) from a Muslim
7. Surplus income