Narrated Al-Mughirah ibn Shu'bah:

One night I became the guest of the Prophet (ﷺ). He ordered that a piece of mutton be roasted, and it was roasted. He then took a knife and began to cut the meat with it for me. In the meantime Bilal came and called him for prayer. He threw the knife and said: What happened! may his hands be smeared with earth! He then stood for offering prayer. Al-Anbari added: My moustaches became lengthy. He trimmed them by placing a took-stick; or he said: I shall trim your moustaches by placing the tooth-stick there. Al-Anbari said: My moustaches became lengthy. He trimmed them by placing a tooth-stick ; or he said: I shall trim your moustaches by placing the tooth-stick there.

حَدَّثَنَا عُثْمَانُ بْنُ أَبِي شَيْبَةَ، وَمُحَمَّدُ بْنُ سُلَيْمَانَ الأَنْبَارِيُّ، - الْمَعْنَى - قَالاَ حَدَّثَنَا وَكِيعٌ، عَنْ مِسْعَرٍ، عَنْ أَبِي صَخْرَةَ، جَامِعِ بْنِ شَدَّادٍ عَنِ الْمُغِيرَةِ بْنِ عَبْدِ اللَّهِ، عَنِ الْمُغِيرَةِ بْنِ شُعْبَةَ، قَالَ ضِفْتُ النَّبِيَّ صلى الله عليه وسلم ذَاتَ لَيْلَةٍ فَأَمَرَ بِجَنْبٍ فَشُوِيَ وَأَخَذَ الشَّفْرَةَ فَجَعَلَ يَحُزُّ لِي بِهَا مِنْهُ - قَالَ - فَجَاءَ بِلاَلٌ فَآذَنَهُ بِالصَّلاَةِ - قَالَ - فَأَلْقَى الشَّفْرَةَ وَقَالَ ‏

‏ مَا لَهُ تَرِبَتْ يَدَاهُ ‏

‏ ‏.‏ وَقَامَ يُصَلِّي ‏.‏ زَادَ الأَنْبَارِيُّ وَكَانَ شَارِبِي وَفَى فَقَصَّهُ لِي عَلَى سِوَاكٍ ‏.‏ أَوْ قَالَ أَقُصُّهُ لَكَ عَلَى سِوَاكٍ ‏.‏