General Behavior (Kitab Al-Adab)
Dawud :: Book 41 : Hadith 4836
Narrated AbudDarda':
The Apostle of Allah (peace_be_upon_him) would sit and we would also sit around him. If he got up intending to return, he would take off his sandals or something he was wearing, and his Companions recognising his purpose (that he would return) would stay where they were.