Hazrat Thaabit bin Ahmed, Abul Qaasim Baghdadi (rahimahullah), relates that he once saw a mu’azzin calling out the azaan for fajr salaah in Musjid-un-Nabawi.

When the mu’azzin called out, “Assalaatu khairum minan nowm” (indeed salaah is better than sleep), a person came up to him and gave him a hard slap. The mu’azzin began to weep and exclaimed, “O Rasulullah (sallallahu ‘alaihi wasallam)! Look at what is being done to me in your mubaarak presence!”