SITTING. Arabic julus جلوس
The traditionists are very particular in describing the precise position in which Muhammad used to sit.
lbn ‘Umar says: I saw him sit with his knees up and the bottom of his feet on the ground, and his arms round his legs.”
Jabir says : I saw him sitting reclining upon a pillow which was put under his arm.”
Kailah says: “I saw him sitting in the mosque upon his buttocks, in the greatest humility and lowliness.”
Jabir says, again. “The Prophet used, after he had said morning prayer, to sit with his feet drawn under him, until sun-rise.” (Mishkat, book xxii. ch. v.)
Muslims tend to sit on the ground in their places of public worship in social gatherings.
Based on Hughes, Dictionary of Islam