“I said to Khabbab: ‘How did you recognize that the Messenger of Allah ﷺ was reciting in the Zuhr and the ‘Asr?’ He said: ‘From the movement of his beard.’” (Using translation from Ibn Mājah 826)
قُلْنَا لِخَبَّابٍ بِأَيِّ شَيْءٍ كُنْتُمْ تَعْرِفُونَ قِرَاءَةَ رَسُولِ اللهِ ﷺ فِي الظُّهْرِ وَالْعَصْرِ؟ قَالَ بِاضْطِرَابِ لِحْيَتِهِ