Spiritual Retreat: Inadvertently Committing an Unlawful Act of Iʿtikaf

Practical Laws of Islam as per the teachings of Ayatullah Sistani

Ruling 1739

If a muʿtakif inadvertently (sahwan) or forgetfully commits an unlawful act of iʿtikāf, it does not invalidate his iʿtikāf in any circumstance.

-Ayatullah Sistani, Practical Laws of Islam, Spiritual Retreat (Iʿtikāf)