What is the ruling and method for combining and shortening prayers for a traveler?

Question:
If I travel a distance of more than one hundred and fifty kilometers and the time for the midday prayer catches me, and due to certain circumstances I delay it until the time for the afternoon prayer, is it permissible for me to combine and shorten in the time of the afternoon prayer, or is that not valid and the only permissible option is to combine without shortening? I ask for clarification, and thank you.

Answer:
The traveler combines the midday and afternoon prayers, and the sunset and night prayers, and shortens the midday, afternoon, and night prayers. This is part of the recommended practice of travel, which is to shorten; he prays the midday prayer with two units, the afternoon prayer with two units, and the night prayer with two units. As for the sunset prayer, he prays it fully with three units, and the dawn prayer is likewise two units.
He may combine the midday and afternoon prayers as long as he is traveling; he prays them in the time of the first, which is the midday, or in the time of the second, which is the afternoon, or between the two. He may also combine the sunset and night prayers; he prays them in the time of the sunset as a combination in advance, or in the time of the night as a combination in delay, or between the two times, at the end of the first time and the beginning of the second time.
All of this is permissible, and praise be to Allah, the matter is broad.