General Behavior (Kitab Al-Adab)
Dawud :: Book 41 : Hadith 5184
Narrated Anas ibn Malik:
The Apostle of Allah (peace_be_upon_him) came to us when I was a boy among the boys. He saluted us and took me by my hand. He then sent me with some message. He himself sat in the shadow of a wall, or he said: near a wall until I returned to him.