Hadith About Standing Up

108. A man must not make another get up from his place and then occupy it himself, but you should spread out and make room.
(Bukhari, Muslim).
(Sayings of Muhammad. by Prof. Ghazi Ahmad).

109. If anyone gets up from where he has been sitting and comes back, he has no right to it.
(Muslim).
(Sayings of Muhammad. by Prof. Ghazi Ahmad).

110. It is not allowable for a man to come in between two people without their permission.
(Tirmidhi).
(Sayings of Muhammad. by Prof. Ghazi Ahmad).