Is it permissible to give one's brother zakat money to pay off his debts and cover his daughter's expenses in Egypt, knowing that he owns another apartment in Egypt, for which he used part of his loan to furnish, and he has a bank account in Egypt that generates a monthly income?

It is permissible to give zakat to one's brother if his income is insufficient for his basic needs and the needs of those he supports. There is no specific proportion for this; rather, he should be given enough for a year's sufficiency, or what completes this sufficiency for him. If he deposits his money in an interest-based bank, he must repent and withdraw his money from it. His possession of a certain amount of money does not affect his eligibility for zakat if he invests it and uses its profits for his basic needs. If his money is sufficient for him, he should not be given zakat. If it covers only some of his needs, he should be given what completes his sufficiency. The definitions of poor and rich vary according to the specific chapter of Islamic law.