Sunan Ibn Majah, Chapter: The Chapters on the Mosques and the Congregations

that the Messenger of Allah (saw) said: "There are things which are not befitting for the masjid (mosque): it should not be taken as a thoroughfare; weapons should not be unsheathed in it; bows should not be drawn nor arrows shot in it; no one should pass through it carrying raw meat; no prescribed punishment or retaliatory punishment should be carried out in it; and it should not be used as a marketplace." (Daif)