He recited a Juz in the morning prayer until nearly sunrise and I fell down

بسم الله الرحمن الرحيم

Imaam Dhahabi (rahimahullaah) mentioned in the biography of Abbaadata that he was one who (liked) to joke and jest.  It was related that Abbaadata entered upon Al-Mutawakkil and he promised to beat him.  He (Mutawaakil) said (to Abbaadata): ”Did you slap the Imaam of the masjid?”  He (Abbaadata) said: O leader of the believers! I entered into the Masjid whilst I was in a hurry, so he led us for the Morning Prayer and prolonged it.  He recited a Juz until the sun was about to rise and I fell down.  Then after the Tasleem he said: ”Repeat your prayer because I was not in a state of ablution”, so I slapped him once.  Mutawakkil laughed.

[Taareekhul Islaam: 18/305]