Does a person need to re-perform Isha solah four rakaat when he reached home,
although he has done the Isha solah two rakaat jama' with maghrib whilst he was
still in musafir?
;
A traveler may combine the Maghrib and Ishaa Prayers, shortening the Ishaa Prayer to two rakaaat only. Once one has done so, one is resolved of obligation and need not re-pray the Ishaa Prayer even if one reaches home during the time of the Ishaa Prayer.
Allah the most Exalted and Knowledgeable knows best.
