Chapter on the Reasons Behind Hajj
Man Lā Yaḥḍuruh al-Faqīh|Volume 2|Book 3|Chapter 1
وَ إِنَّمَا يُكْرَهُ اَلاِحْتِبَاءُ فِي اَلْمَسْجِدِ اَلْحَرَامِ تَعْظِيماً لِلْكَعْبَةِ ».
Sitting with one's knees drawn up (ihtiba') in the Sacred Mosque is disliked out of reverence for the Kaaba.
- Ṣaḥīḥ al-Faqīh