Is it permissible to allocate a specific percentage – 5% monthly – of the donations collected for a charity that works on developing Ain Shams University hospitals, to be spent on the expenses of establishing the charity, printing publications, and advertising campaigns to increase donations? What is the maximum permissible limit for this? Are there any conditions for this expenditure, such as informing the donor?

There is no harm in deducting a percentage from donations to facilitate the general services of the association, to raise awareness among people about its activities, and to encourage their participation, as well as for anything else necessary for the association's management or development. However, fairness and justice should be sought, and extravagance avoided, because the disposal of money is tied to the benefit. If the donor specifies a particular expenditure, then that must be adhered to.