Sunan Ibn Majah 826
سنن ابن ماجه#826SahihIt was narrated that Abu Ma’mar said:“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.’”
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Fouad Abd al-BaqiSahih
Shuaib Al ArnautSahih
Zubair Ali ZaiSahih Bukhari
In-book reference: 5:24