Abu Dawud
The Office Of The Judge
Book Number: 018 / Hadith Number: 3624
Narated By Mu'awiyah al-Qushayri : Bahz ibn Hakim reported from his grandfather: (Ibn Qudamah's version has: His grandfather's brother or uncle reported:) - the narrator Mu'ammal said: - He (his grandfather Mu'awiyah) got up before the Holy Prophet (pbuh) who was giving sermon: and he said: Why have your companions arrested my neighbours? He turned away from him twice. He (his grandfather Mu'awiyah) then mentioned something. The Holy Prophet (pbuh) then said: Let his neighbours go.
(Mu'ammal did not mention the words "He was giving sermon.")