Ruling 1757
A muʿtakif can walk under a shade outside the mosque, although the recommended precaution is that he should avoid doing so.
-Ayatullah Sistani, Practical Laws of Islam, Spiritual Retreat (Iʿtikāf)
Spiritual Retreat: Walking Under a Shade Outside the Mosque
Practical Laws of Islam as per the teachings of Ayatullah Sistani
