Is it permissible to give Zakat to a brother who is currently being financially supported, given that the Zakat giver will move to live separately from him after a month and will not be able to support him then, and given that there is a monthly financial contribution to his parents who live with him, and that the brother has recently married and is experiencing hardship?

It is permissible to give Zakat (definition) to a poor brother who does not possess enough to meet his basic needs, is unable to earn a living, or whose income is insufficient for his usual expenses. In fact, giving Zakat to deserving relatives is more meritorious than giving it to others, as the Prophet, peace and blessings be upon him, said: "Charity given to the poor is charity, and to a relative, it is two: maintaining kinship ties and charity." Voluntary spending on a brother does not preclude giving him from Zakat, so long as he is eligible.