Undesirability of Leaving the Masjid without offering Salat (Prayer)
after the Adhan has been Proclaimed
Abu Sha`tha' said: We were sitting with Abu Hurairah
in the Masjid when the Mu'adhdhin proclaimed the Adhan. A man stood up in the Masjid and started walking out. Abu Hurairah
stared at him till he went out of the Masjid. Upon this Abu Hurairah
said: Indeed, this man has disobeyed Abul-Qasim
We learn from this Hadith that after hearing Adhan, one should not leave the Masjid without offering the obligatory Salat connected with it, unless one has a very genuine reason for doing so.
For an explanation of this Hadith by Dr Muhammad Salah view the video included in Hadith No. 1783 of Chapter 357