Money taken at the borders of the State from custom duties, income derived from public or State property, inheritance for which there is no inheritor and the assets of the apostates are all considered to be part of the revenue of the Bayt Al-Mal.

The evidence for the article is what has been reported from Umar (ra) regarding the Muslims taking from the traders of those they were at war with according to what they took from the Muslim traders; it is reported by Ibn Abu Shayba in Al-Musannaf: “from Abu Mijliz – that Omar sent Uthman Bin Hanif who imposed upon the wealth of people of Dhimma that they differed over, a tax of one Dirham from every twenty and wrote to Omar who was content and gave him permission, and he said Omar: How much should we take from the people of war if they come to us? He said: How much do they take from you if you go to them? They said: A tenth. He said: So take the same from them”.

Abu ‘Ubayd reported in Al-Amwal from ‘Abd alRahman Bin Ma’qal who said: I asked Ziyaad Bin Hudair about whom they would take a tenth from. He said: “We didn’t use to take a tenth from a Muslim, nor from someone who had a covenant. I said: So who did you take the tenth from? He said: The disbelievers from the merchants of war, so we used to take from them as they used to take from us”. This is an evidence that custom duties which are taken from non-subjects of the State are considered to be from the sources of income of the Bayt Al-Mal.

This is with respect to the taxes, as for the wealth which is produced by public property, the Khalifah has been made the representative of the Muslims in managing their interests, and so whatever is from the public wealth which all of the individual citizens are able to enjoy, then they are left to them to use as they please, such as rivers and well water which could be used for irrigation. But if the usage of some prevents others, such as steel minerals, which leads to the one who is capable taking it while the one incapable gets nothing of it, then the Khalifah takes responsibility for managing this resource and extracting whatever is there in order to enable all the citizens to benefit from its sale. Accordingly, this wealth is placed in the Bayt Al-Mal and is considered to be from its sources of income because the Khalifah is the one who manages it. However, it is not spent according to the opinion and Ijtihad of the Khalifah in everything, since it is for the general citizens, and his opinion and Ijtihad is regarding the equality and inequality in expenditure, and not upon who it is paid for, since it is not from the State property.