Narrated Abu Huraira:
While Umar bin Al-Khattab was delivering the Khutba on a Friday, a man entered the mosque. Umar asked him, "What has detained you from the prayer?" The man said, "It was only that when I heard the Adhan I performed ablution for the prayer". On that Umar said, "Did you not hear the Prophet peace be upon him saying: 'Anyone of you going out for the Jumua prayer should take a bath'?".