Is it permissible to engage in Forex trading, which relies on the margin system, out of necessity to cover study expenses amounting to five thousand dinars annually, with the intention of stopping once the required amount is secured?

It is not permissible to trade in Forex due to its inclusion of many Shariah prohibitions, and there is no necessity for it, as the paths of lawful earning are numerous. The limit of necessity, at which a person is permitted to commit a prohibited act, is when it is highly probable that the person will face destruction because of it, or suffer unbearable hardship, or be unable to achieve the minimum standard of living for the poor. Necessity is estimated by its measure, so if it ceases to exist or something else takes its place, then committing the prohibited act is not permissible.