Ruling on combining the Maghrib and 'Isha' prayers while traveling and performing them between Maghrib and 'Isha'

Question:
If a woman is traveling a long distance of four hundred kilometers or more, and she combines and shortens the Maghrib and 'Isha' prayers between Maghrib and 'Isha', is this permissible?

Answer:
Yes, she may combine them from the beginning of the time of the first prayer until the end of the time of the second. She may combine them by bringing the later one forward or by delaying the earlier one, and she may combine them at the beginning, the end, or the middle of the time, as there is no harm in that, because the time of the two prayers becomes one time in the case of combining.