Is eating from the money of my brother, who works in preparing shisha, unlawful (haram), and must I leave his house or not, given that I have no other place to stay?

Shisha is forbidden (haram), and it is not permissible to benefit from its money. One should advise the brother to abandon it. It is permissible to benefit from the brother's food and drink if he has other lawful sources of income, or if the household income is mixed, because his money is mixed. The wife's maintenance is obligatory upon her husband. It is preferable to refrain from consuming the brother's money if it is mixed with unlawful money, especially if the wife has lawful money or if her husband provides for her. It is permissible to live with the brother, and there is no need to rent a separate dwelling to avoid harm.