Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
ahmad:23153ʿAbd al-Raḥman b. Mahdī > Sufyān > Abū al-Zaʿrāʾ > Abū al-Aḥwaṣ

[Machine] From some of the companions of the Prophet ﷺ , they said, "The recitation of the Prophet ﷺ during the afternoon prayer was known by the movement of his beard."  

أحمد:٢٣١٥٣حَدَّثَنَا عَبْدُ الرَّحْمَنِ بْنُ مَهْدِيٍّ عَنْ سُفْيَانَ عَنْ أَبِي الزَّعْرَاءِ عَنْ أَبِي الْأَحْوَصِ

عَنْ بَعْضِ أَصْحَابِ النَّبِيِّ ﷺ قَالَ كَانَتْ تُعْرَفُ قِرَاءَةُ النَّبِيِّ ﷺ فِي الظُّهْرِ بِتَحْرِيكِ لِحْيَتِهِ