Missing Salah For A Long Time Due To Illness
1 ) If a person is unconscious for one day, then he should offer his leftover prayers after attaining his consciousness back. Those prayers would not be considered as Qaza when he offers them. 2 ) Decision of undue difficulty is subjective to the person and he has to decide which particular course of action in his case creates ease for him. The spirit one gets from Quranic directives is that God wants Muslims to offer their prayers on time, either when walking or while travelling or laying etc. It is because of this spirit, it is recommended to pray on time through whatever means possible. But this doesn’t mean that a person who combines his prayers because of ‘ undue difficulty ‘ has done anything wrong. In Hajj ( where Jihad against Satan has been symbolized ), such shortening and combining of Salah has been instituted as Sunnat-e-Mutawatra by Prophet Muhammad (sws) without depending on any such sequence. 3 ) Since nothing explicit has been said in this regard in Sharia, therefore, if one asks genuine forgiveness from Allah after realizing this fact, then hopefully Allah will forgive. This is view of Ibn-e-Hazm as well. However, the above mentioned view in earlier comments is based on extra care.