Does the prayer become invalid if the one praying turns away from the qiblah to open the door?

Question:
He says: Honorable Shaykh, may Allah grant you success, if the one praying opens the door and turns away from the qiblah, is his prayer valid?

Answer:
He does not turn away from the qiblah; he opens the door while facing the qiblah. He does not turn away from the qiblah except for serious matters, such as killing a snake or a scorpion, or something that poses a danger, or fighting the enemy. Yes.