Bayt al-mol — musulmonlarga tegishli bo‘lgan har qanday daromad (tushum) yoki xarajat uchun mas’ul bo‘lgan idoradir. Shuning uchun musulmonlarga haqli ravishda tegishli bo‘lgan, ammo egasi belgilanmagan har qanday mol-mulk, egasi toifa sifatida belgilangan bo‘lsa ham, Bayt al-molga qarashli bo‘ladi. Mol-mulk qabul qilingach, u haqiqatda o‘z egallashiga o‘tganmi yoki yo‘qmi, qabul qilinishi bilan Bayt al-molning huquqlariga qo‘shiladi, chunki Bayt al-mol shunchaki joy emas, balki idoradir. Musulmonlar manfaatiga sarflanishi lozim bo‘lgan har qanday huquq Bayt al-molning zimmasidadir. Agar u o‘zining belgilangan yo‘nalishida sarflangan bo‘lsa, u Bayt al-molning xarajatlariga qo‘shiladi, qo‘lidan chiqqanmi yoki yo‘qmi, farqi yo‘q. Chunki musulmonlarning hokimlariga yetib kelgan yoki ular tomonidan sarflangan narsaga, daromad yoki xarajat sifatida bo‘lishidan qat’i nazar, Bayt al-molning qonuni tatbiq etiladi.

The Bait ul-Mal is the authority responsible for every income (revenue) or expense, which the Muslims are entitled to. Therefore, every property (Mal) that the Muslims are entitled to, and whose owner is not assigned, is assigned to the Bait ul-Mal, even if its owner as a category was assigned. Once the property was received, then by its receipt it is added to the rights of the Bait ul-Mal, whether the property actually entered into its possession or not, because the Bait ul- Mal is an authority and not just a place. And every right, which is due to be spent on the Muslims interests, is a right upon the Bait ul-Mal. If it was spent in its specified area then it becomes added to the expenses of the Bait ul-Mal, whether it left its hold or not. Because that which reached the governors of Muslims, or is spent by them, then the law of the Bait ul- Mal applies to it, whether as revenue or expenses.