I made an effort to determine the qiblah in my new residence, and after three days it became clear that my effort was mistaken. What is the ruling on my prayers?

Question:
He says: Honorable Shaykh, may Allah grant you success. He says: I moved into a new residence and did not know in which direction the qiblah was, so I made an effort and prayed. Then, after three days, I discovered that the qiblah was not the one I had been facing. What is the ruling on my prayers during those three days?

Answer:
First, what is the place for making an effort (ijtihad) here? You are in a country and there are mosques. What is the place for making an effort? Look at the mosques, ask the people, and know the qiblah. Your effort here is not in its proper place. That is one thing. The second thing: if the deviation from the qiblah is significant, you repeat the prayers. But if it is slight, your prayer is valid. Yes, but you should correct your prayer in the future. As for what has passed, if the deviation was slight, it is valid, if Allah wills. Yes.