Ash-Shama'il Al-Muhammadiyah, Book 25, Hadith 157 (English) ⓘ

Mughirah bin Shu'bah Radiyallahu'Anhu says: "One night I became a guest with Rasulullah Sallallahu 'Alayhi Wasallam. At the time of meals a roasted side portion of meat was served. Rasulullah Sallallahu 'Alayhi Wasallam cut pieces from it and gave me to eat. During this period Bilaal came and called out the adhaan. Rasulullah Sallallahu 'Alayhi Wasallam said: 'May his both hands be in dust. What made him call out the adhaan now'. He put down the knife and went for salaah". Mughirah Radiyallahu 'Anhu says "(Another thing that happened) that my moustache had grown long. Rasulullah Sallallahu 'Alayhi Wasallam said: 'Come let me put a miswaak on it and trim it', or said, 'Put a miswaak on it and trim it'. (One of the narrators are in doubt as to which of the two Rasulullah Sallallahu 'Alayhi Wasallam had said).

حَدَّثَنَا مَحْمُودُ بْنُ غَيْلانَ، قَالَ‏:‏ حَدَّثَنَا وَكِيعٌ، قَالَ‏:‏ حَدَّثَنَا مِسْعَرٌ، عَنْ أَبِي صَخْرَةَ جَامِعِ بْنِ شَدَّادٍ، عَنِ الْمُغِيرَةِ بْنِ عَبْدِ اللهِ، عَنِ الْمُغِيرَةِ بْنِ شُعْبَةَ، قَالَ‏:‏ ضِفْتُ مَعَ رَسُولِ اللهِ صلى الله عليه وسلم ذَاتَ لَيْلَةٍ، فَأُتِيَ بِجَنْبٍ مَشْوِيٍّ، ثُمَّ أَخَذَ الشَّفْرَةَ فَجَعَلَ يَحُزُّ، فَحَزَّ لِي بِهَا مِنْهُ، قَالَ‏:‏ فَجَاءَ بِلالٌ يُؤْذِنُهُ بِالصَّلاةِ فَأَلْقَى الشَّفْرَةَ، فَقَالَ‏:‏ مَا لَهُ تَرِبَتْ يَدَاهُ‏؟‏، قَالَ‏:‏ وَكَانَ شَارِبُهُ قَدْ وَفَى، فَقَالَ لَهُ‏:‏ أَقُصُّهُ لَكَ عَلَى سِوَاكٍ أَوْ قُصُّهُ عَلَى سِوَاكٍ‏.‏