'Ammar delivered to us the sermon. It was short and eloquent. When he (, Ammir) descended (from the pulpit) we said to him: 0 Abd al-Yaqzn, you have delivered a short and eloquent sermon. Would that you had lengthened (the sermon). He said: I have heard the Messenger of Allah ﷺ as saying: The lengthening of prayer by a man and the shortness of the sermon is the sign of his understanding (of faith). So lengthen the prayer and shorten the sermon, for there is charm (in precise) expression.  

أَبُو وَائِلٍ خَطَبَنَا عَمَّارٌ فَأَوْجَزَ وَأَبْلَغَ فَلَمَّا نَزَلَ قُلْنَا يَا أَبَا الْيَقْظَانِ لَقَدْ أَبْلَغْتَ وَأَوْجَزْتَ فَلَوْ كُنْتَ تَنَفَّسْتَ فَقَالَ إِنِّي سَمِعْتُ رَسُولَ اللَّهِ ﷺ يَقُولُ إِنَّ طُولَ صَلاَةِ الرَّجُلِ وَقِصَرَ خُطْبَتِهِ مَئِنَّةٌ مِنْ فِقْهِهِ فَأَطِيلُوا الصَّلاَةَ وَاقْصُرُوا الْخُطْبَةَ وَإِنَّ مِنَ الْبَيَانِ سِحْرًا  

[Machine] I heard the Messenger of Allah, peace be upon him, saying, "Indeed, the length of a man's prayer and the brevity of his sermon are indicative of his understanding of the religion, so prolong your prayers and shorten your sermons, for surely, eloquence lies in clear expression."  

سَمِعْتُ رَسُولَ اللَّهِ ﷺ يَقُولُ «إِنَّ طُولَ صَلَاةِ الرَّجُلِ وَقِصَرَ خُطْبَتِهِ مَئِنَّةٌ مِنْ فِقْهِهِ فَأَطِيلُوا هَذِهِ الصَّلَاةَ وَاقْصُرُوا هَذِهِ الْخُطَبَ فَإِنَّ مِنَ الْبَيَانِ لسِحْرًا»  

[Machine] "I heard the Messenger of Allah ﷺ saying, 'Indeed, the length of a man's prayer and the brevity of his sermon is indicative of his understanding (of religion). So lengthen the prayer and shorten the sermon, for indeed, eloquence is a form of magic.'"  

سَمِعْتُ رَسُولَ اللَّهِ ﷺ يَقُولُ «إِنَّ طُولَ صَلَاةِ الرَّجُلِ وَقِصَرَ خُطْبَتِهِ مَئِنَّةٌ مِنْ فِقْهِ الرَّجُلِ فَأَطِيلُوا الصَّلَاةَ وَاقْصُرُوا الْخُطْبَةَ وَإِنَّ مِنَ الْبَيَانِ سِحْرًا»  

'Ammar delivered to us the sermon. It was short and eloquent. When he (, Ammir) descended (from the pulpit) we said to him: 0 Abd al-Yaqzn, you have delivered a short and eloquent sermon. Would that you had lengthened (the sermon). He said: I have heard the Messenger of Allah ﷺ as saying: The lengthening of prayer by a man and the shortness of the sermon is the sign of his understanding (of faith). So lengthen the prayer and shorten the sermon, for there is charm (in precise) expression. (Using translation from Muslim 869)   

خَطَبَنَا عَمَّارٌ ؓ فَأَبْلَغَ وَأَوْجَزَ فَلَمَّا نَزَلَ قُلْنَا يَا أَبَا الْيَقْظَانِ لَقَدْ أَبَلَغْتَ وَأَوْجَزْتَ فَلَوْ كُنْتَ تَنَفَّسْتَ؟ فَقَالَ سَمِعْتُ رَسُولَ اللهِ ﷺ يَقُولُ إِنَّ طُولَ صَلَاةِ الرَّجُلِ وَقِصَرَ خُطْبَتِهِ مَئِنَّةٌ مِنْ فَقْهِهِ فَأَطِيلُوا الصَّلَاةَ وَأَقْصِرُوا الْخُطَبَ وَإِنَّ مِنَ الْبَيَانِ لَسِحْرًا