Does the applicant's need to purchase an apartment so he can reunite with his family again constitute a necessity that permits him to take out an interest-based loan, knowing that he sacrificed his home and savings for the sake of his brother, and currently lives in his father's house, while his wife and children reside in her father's house in another governorate, and his financial circumstances and rising prices prevent him from securing suitable housing?

Housing is a necessity, like food and drink. However, owning it is a need that does not permit borrowing with usury as long as renting is possible. Usury is one of the greatest prohibitions, and it is not permissible to borrow with it to own a house except in cases of dire necessity. The limit of necessity is when it is highly probable that one will perish due to it, or be afflicted with unbearable hardship, or be unable to achieve the minimum standard of living for the poor. Necessity is assessed according to its extent.