Asking Permission

Bukhari :: Book 8 :: Volume 74 :: Hadith 287

Narrated Ibn 'Umar:

The Prophet forbade that a man should be made to get up from his seat so that another might sit on it, but one should make room and spread out. Ibn 'Umar disliked that a man should get up from his seat and then somebody else sit at his place.

Source materials are from the University of Southern California MSA site
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