Sahih al-Bukhari Hadith 744 – Volume 1, Book 12

English

Volume 1, Book 12, Number 744:
Narrated Abu Ma'mar:
We said to Khabbab "Did Allah's Apostle used to recite in Zuhr and 'Asr prayers?" He replied in the
affirmative. We said, "How did you come to know about it?" He said, "By the movement of his beard."