Asking Permission 
Bukhari :: Book 8 :: Volume 74 :: Hadith 286
Narrated Ibn 'Umar:
The Prophet said, "A man should not make another man get up from his (the latter's) seat (in a gathering) in order to sit there.
Asking Permission
Bukhari :: Book 8 :: Volume 74 :: Hadith 286
Narrated Ibn 'Umar:
The Prophet said, "A man should not make another man get up from his (the latter's) seat (in a gathering) in order to sit there.