Can a disabled, paralyzed person perform Umrah in his clothes without wearing the ihram, and is expiation (kaffarah) required for that?

If a person is unable to wear the ihram garments, he may wear any permissible clothing that suits him, and he must offer a fidyah (expiation): either sacrifice a sheep to be distributed among the poor, or feed six needy persons, with each receiving half a sa' (a measure of food), or fast for three days. This is an analogy based on the fidyah for shaving the head, which is mentioned in Surat Al-Baqarah (2:196). The fidyah, whether sacrificing or feeding, must be performed in Mecca.