Hadith 357
´Thawban narrated that :` the Prophet said: "It is not allowed for a man to look into the interior of a man's house until he has been given permission, for if he looks, then he has entered. And one who leads people (in Salat) should not supplicate for himself alone with the exclusion of his congregation. If he does, then he has betrayed them. And one is not to stand for Salat while he has to urinate."
Hadith 2380
´Miqdam bin Ma'dikarib said:` "I heard the Messenger of Allah (S.a.w) saying: 'The human does not fill any container that is worse than his stomach. It is sufficient for the son of Adam to eat what will support his back. If this is not possible, then a third for food, a third for drink, and third for his breath."