Zakah money is not the only source of the treasury
17-12-2008 | IslamWeb
Question:
Assalamu alaikum.At the time of Khulafa Rashid(Allah be pleased with them) Baithul Maal also contained Zakaath money.When monetory help was given to poor people of Ahle Kithab(non muslims) how was non zakaath money of Baithul Maal differentiated from Zakaath money as Zakaath money should not be given to nonmuslims.Was a separate account maintained of the amount in Baithul Maal to differentiate Zakaath money from non Zakaath money as when helping poor people who are nonmuslims zakaath money should not be given as Zakaath money should be given only to the 8 categories of people mentioned in Surah Tauba.Since Baithul Maal contains both Zakaath and non Zakaath money how was it differentiated?Was an account kept how much was Zakaath money and how much was non Zakaath money? Is there any evidence in any authentic book for this that they had kept a detailed account of the money in Baithul Maal especially to differentiate Zakaath and non Zakaath money to take the precaution that Zakaath money does not go to nonmuslims?Some Scholars are confusing people here that Baithulmaal contains only Zakath money and that since this money was given to poor among non muslims,they say we can give Zakaath to nonmuslims.Hope Insha Allah you will clear this confusion.Thank you.
Answer:
All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad 
is His slave and Messenger.
At the present, time many misconceptions –like the one you mentioned in the question –are widespread.
The answer to this misconception is as follows:
1- Many scholars 
stated that there is a consensus among the scholars that Zakah should not be given to a non-Muslim except those on whom there is a difference of opinion, i.e. those who are inclined towards Islam and it is hoped to attract their hearts. As regards giving Zakah to a non-Muslim without any restrictions, then it is agreed among the scholars that it is forbidden to give it to him, as reported by Ibn Qudaamah and others . For more benefit, please refer to Fataawa 87316 and 82875.
2- In principle, Zakah money is not added to the treasury; rather, what is practised during the first generation is that the Zakah-collector distributes the Zakah among the poor of the area from which it is collected, acting according to the advice of the Prophet to Mu’aath 
“It (Zakah) should be taken from the rich amongst them and be given to the poor amongst them.” Moreover, there is a difference of opinion among the scholars about the permissibility of transferring the Zakah from one country to another and many of them did not permit it. The Zakah money is not taken to the treasury unless there is no poor in the area from which it is collected who may take it. It is reported that ‘Umar criticized Mu’aath for sending Zakah money to him, and Mu’aath apologized to him that he did not find anyone to take it.
3- Claiming that Zakah is the only source of the treasury is not correct, and we already clarified to you that in principle Zakah money is distributed amongst the poor in the area from which it is collected and that it was not added to the treasury.
As regards the main sources of the treasury, they were as follows: a) the fifth of the booty, b) the spoils which the Muslims got without war, c) the money whose owners are not known –and it was much at that time because of the conquests when many non-Muslims went in exile from their countries, d) the land tax on the countries which were conquered by force such as the Levant, Iraq and Egypt, and which was imposed by ‘Umar who saw the benefit of leaving the land in the hands of its owners in exchange for the payment of a land tax, and e) the Jizyah, which was the tax imposed on the rich adult non-Muslim people who live freely in a Muslim land. Therefore, whoever claims after all this that Zakah is the only source of the treasury is absolutely wrong.
Hence, we advise you to get around the outstanding scholars who are known for their knowledge and piety, and avoid those people who raise misconceptions.
We ask Allaah to guide us and all the Muslims to the straight path.
Allaah Knows best.