for respect and reverence.

What did Umar (peace be upon him) say to the two men from Ta'if when they arrived in the mosque of the Prophet Muhammad (saw)?
 Narrated Al-Sa'ib bin Yazid:                     I was standing in the mosque and somebody threw a gravel at me. I looked and found that he was `Umar bin Al-Khattab. He said to me, "Fetch those two men to me." When I did, he said to them, "Who are you? (Or) where do you come from?" They replied, "We are from Ta'if." `Umar said, "Were you from this city (Medina) I would have punished you for raising your voices in the mosque of Allah's Apostle."