As a general rule...

As a general rule, it tells the Prophet (S) to take alms tax from their properties. The verse says: “Take alms out of their possessions…” The Divine command is a clear evidence for that the chief of the Islamic government can take ‘the alms tax’ from people. It is not in a manner that he must wait until if they wish they pay it by themselves, and, otherwise, they do not pay it. Then, the Qur’ān refers to two parts of the psychological, ethical, and social philosophy of almsgiving.

It says: “…to cleanse them and purify them thereby…” Almsgiving cleanse them from the bad qualities, purifies them from mammunism and stinginess, and grows the plant of philanthropy, generosity and attentiveness to people’s rights in them. Moreover, by the fulfilment of this divine commandment, you may wipe out the imputies and mischieves which come into being inside the society because of poverty, class division, and the deprivation of some groups therein.

Thus, you may clean the scene of the society from these vices. Then, it implies that when they pay alms tax, you…