Purity: Facing Qibla Out of Necessity to Avoid Exposure to Non-Maḥram

Practical Laws of Islam as per the teachings of Ayatullah Sistani

Ruling 58

If a person is obliged to face his front or back to qibla so that someone who is not his maḥram does not see him, then based on obligatory precaution, he must sit with his back facing qibla.

-Ayatullah Sistani, Practical Laws of Islam, Purification (Taharah)