The ruling on repeating the prayer for one who deviated from the qiblah

Question:
The questioner, Abu 'Abdullah, says: We prayed several obligatory prayers with our children while we were traveling. After we returned to the apartment, we realized that we had been praying in a direction other than the qiblah for five days, and we have returned now.

Answer:
If it is established that you prayed in a direction other than the qiblah, meaning you were completely deviated from the qiblah, with the qiblah behind your backs or to your side, then it is necessary to repeat the prayer. This is because if you are in a country with mosques and Muslims, you can ask them and know the evidence for the qiblah, or ask the people in charge of the building or the hotel, or those who can guide you to the direction of the qiblah. So you are not excused. However, if you are in a desert or in the open with no one to teach you about the qiblah, and you exerted your effort and prayed according to your ijtihad, and then it turned out that you were mistaken, your prayer is valid because you did what you could. Yes. And a slight deviation, Honorable Shaykh?
A slight deviation does not harm, due to the saying of the Messenger (peace and blessings be upon him) "The east is their qiblah," meaning for the people of Madinah, and others are measured by them. The criterion is the direction in which the Ka'bah is located . So if you face it, even if you do not hit the exact spot of the Ka'bah, your prayer is valid. Yes.