The Ruling on Praying the Obligatory Prayer on an Airplane or Train

Question:
Honorable Shaykh, may Allah grant you success, what is the ruling on praying the obligatory prayer on an airplane or on a train while traveling?

Answer:
There is nothing wrong with it. An airplane and a train are like a room. Just as you pray in a room, if you are able to stand, bow, and prostrate, that is good. If you are not able to do so, and the time is about to end before you arrive, and this prayer cannot be combined with the one following it, then you pray as you would pray the Fajr prayer. For example, if the time ends and the train does not stop, or the airplane does not land, and you are unable to bow or prostrate on the floor of the airplane, then you pray with your intention, and the time does not expire upon you. However, if the airplane is going to land, or the train is going to arrive, before the time ends, then you delay it. Or, if the current prayer is valid to be combined with the one following it, such as Zuhr with 'Asr, or Maghrib with 'Isha', then you delay it until the time of the second prayer. When you arrive at the place, you pray them combined.