Is it permissible for a disabled person who is unable to marry to practice masturbation?

It is not permissible for a disabled person who is unable to marry to masturbate except in cases of dire necessity, because it is forbidden and not allowed except out of necessity. Inability to marry due to disability is not a form of necessity that permits masturbation, and masturbation is not a cure for lust; rather, it causes sexual impotence. As for disability, it is not an impediment to the validity of marriage if the situation is explained to the wife and she consents to it.