Ruling on the traveler shortening the prayer for a period of about two or three months

The questioner (S. A.) says: I used to shorten the prayer while traveling after the period I spent in the region I went to, which was about two or three months, without knowing the duration for which shortening is permitted. What is the ruling on my prayers that I performed shortened during my travel? And what is obligatory for me? Do I have to repeat them?
Answer: Your prayer is valid and you do not have to repeat it; because a group of scholars held that the traveler shortens the prayer even if his duration is long, based on the apparent meaning of some hadiths, and this is a strong opinion. However, the most cautious course for the believer, if he intends to stay more than four days in a town, village, or in the open countryside, is to complete the prayer if he resolves to stay more than four days. This is the most cautious position, which is the view of the majority.
But if he shortens the prayer by following the second opinion, he does not have to repeat it and there is no blame on him. However, the recommended practice is to seek what is most cautious for him. So if he resolves to stay more than four days in his residence in the open countryside, in a village, or in a town, it is better for him to pray four rak'ahs. This is the most cautious course for him, and he should seek to do so.
He should not pray alone, but it is obligatory for him to pray four rak'ahs with the people in the mosques. He should not pray alone. If he is in a town, it is obligatory for him to pray four rak'ahs with the people. Yes.