Zakat is obligatory from a person on eight organs: sight, hearing, tongue, hand, stomach, genitals, leg, and heart. For each organ, and for each of these organs, there is an obligatory charity for which God asks the servant for it in the afterlife. As for voluntary charity, every vein in a person is required to pay a charity as

He, may God’s prayers and peace be upon him, said: “There is a sadaqa on every human being’s salute.

And the salami are the veins on the back of the hand, and it is said, ‘veins.’ So every tasbihah is a sadaqah, and every tahlila is a sadaqah. And so are praises and takbirs.