Characteristics of Prayer
Bukhari :: Book 1 :: Volume 12 :: Hadith 727
Narrated Abu Ma'mar:
I asked Khabbab whether the Prophet used to recite the Qur'an in the Zuhr and the 'Asr prayers. He replied in the affirmative. We said, "How did you come to know that?" He said, "From the movement of his beard."
Source materials are from the University of Southern California MSA site|
Hadith eBooks converted from Imaan Star