A traveling man prayed the midday prayer in full (four units) and combined the afternoon prayer with it in shortened form, saying that the midday prayer became obligatory upon him before he traveled!

Question:
Honorable Shaykh, may Allah grant you success. A man prepared to travel, and the mu'adhdhin called the adhan for the midday prayer while he was still in his town. A man. A man prepared to travel, and the mu'adhdhin called the adhan for the midday prayer, and he was still in his town. So he left the town, and after an hour of his journey, he prayed the midday prayer in full (four units). He says that it became obligatory upon him while he was resident, so he completed it. Then he combined the afternoon prayer with it by bringing it forward, and he shortened the afternoon prayer. Is his action valid?

Answer:
Yes, he prayed four units. The midday prayer; because it became obligatory upon him in full, and he performed it in full, there is no harm in that. He combines the afternoon prayer with it, and shortens it, there is no harm in that. Yes.