The obligatory prayer on an airplane and a train

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

Answer:
This is good. An airplane and a train: when you pray the Fajr prayer, if you are able to stand, bow, and prostrate, that is good. If you are not able, and the time will end before you arrive, and this prayer is not one that can be combined with the one following it, then if it is, for example, the Fajr prayer and the time has passed, and the train stopped but the airplane did not, and you are unable to bow and prostrate on a pure surface, you pray with your intention, and the time does not expire on you. However, if the airplane is going to land or the train is going to arrive before the time ends, you delay it. Or if this prayer that is present is valid to be combined with the one after it, such as Zuhr with 'Asr or Maghrib with 'Isha', you delay it until the time. So when you arrive at the place, you pray them combined.