Sahih Muslim 2493 b
It was reported that Abu Huraira used to say:
Listen to me, inmate of the apartment; listen to me, inmate of the apartment, while 'A'isha (Allah be pleased with her) had been busy in observing prayer. As she finished prayer, she said to" Urwa: Did you hear his words? And this is how Allah's Messenger (ﷺ) used to utter (so distinctly) that if one intended to count (the words uttered) he would be able to do so.
حَدَّثَنَا هَارُونُ بْنُ مَعْرُوفٍ، حَدَّثَنَا بِهِ، سُفْيَانُ بْنُ عُيَيْنَةَ عَنْ هِشَامٍ، عَنْ أَبِيهِ، قَالَ
 كَانَ أَبُو هُرَيْرَةَ يُحَدِّثُ وَيَقُولُ اسْمَعِي يَا رَبَّةَ الْحُجْرَةِ اسْمَعِي يَا رَبَّةَ الْحُجْرَةِ ‏.‏ وَعَائِشَةُ
 تُصَلِّي فَلَمَّا قَضَتْ صَلاَتَهَا قَالَتْ لِعُرْوَةَ أَلاَ تَسْمَعُ إِلَى هَذَا وَمَقَالَتِهِ آنِفًا إِنَّمَا كَانَ النَّبِيُّ
 صلى الله عليه وسلم يُحَدِّثُ حَدِيثًا لَوْ عَدَّهُ الْعَادُّ لأَحْصَاهُ ‏.‏