Ammar delivered a sermon to us that was brief yet profound. When he came down, we said to him, "Abu Yaqzan, you spoke eloquently and concisely. If only you had drawn it out a little!"He replied, "I heard the Messenger of Allah ﷺ say, 'A man's lengthening his prayer and shortening his sermon is a sign of his understanding. So make your prayers long and your sermons short, for indeed some eloquence is like magic.'"
خطبنا عمار فأوجز وأبلغ، فلما نزل قلنا: يا أبا اليقظان! لقد أبلغت وأوجزت، فلو كنت تنفست! فقال: إني سمعت رسول الله ﷺ الله يقول: إن طول صلاة الرجل وقصر خطبته مئنة من فقهه. فأطيلوا الصلاة، وأقصروا الخطبة، وإن من البيان لسحرا.
Muslim narrated it in the Book of Jumuah (869) through the route of Abdul-Rahman bin Abdul-Malik bin Abjar, from his father, from Wasil bin Hayan, who said, Abu Waail said, and then he related it.His statement, "mi'annah," is with a fatha on the mim, then a kasra on the hamzah, then a doubled nun. It is derived from "anna" (إن), which is a particle of emphasis and verification, and the khutbah is the place where it becomes verified that the speaker is knowledgeable in fiqh.