'Abdullah ibn ash-Shikh-khir reported that his father said:

"I came to Allah’s Messenger (ﷺ) while he was performing the ritual prayer, and his inner body [jauf] was producing a humming sound like the humming of the cauldron due to his weeping.”

حَدَّثَنَا سُوَيْدُ بْنُ نَصْرٍ، قَالَ‏:‏ حَدَّثَنَا عَبْدُ اللهِ بْنُ الْمُبَارِكِ، عَنْ حَمَّادِ بْنِ سَلَمَةَ، عَنْ ثَابِتٍ، عَنْ مُطَرِّفٍ وَهُوَ ابْنُ عَبْدِ اللهِ بْنِ الشِّخِّيرِ، عَنْ أَبِيهِ، قَالَ‏:‏ أَتَيْتُ رَسُولَ اللهِ صلى الله عليه وسلم وَهُوَ يُصَلِّي، وَلِجَوْفِهِ أَزِيزٌ كَأَزِيزِ الْمِرْجَلِ مِنَ الْبُكَاءِ‏.‏