(Imām Bukhārī narrates): 'Umar ibn Hafs narrated to us, he said: My father narrated to us, he said: Al-A'mash narrated to us, he said: 'Umārah narrated to me, from Abī Ma'mar, he said:

We asked Khabbāb, may Allāh be pleased with him: Did the Prophet ﷺ recite the Qur'ān in the Zuhr and 'Asr prayers? He said: Yes indeed! We said: How did you recognize that? He said: By the movement of the beard of the Prophet ﷺ.