Sahih al-Bukhari Hadith 775 – Volume 1, Book 12

English

Volume 1, Book 12, Number 775:
Narrated Al-Bara' bin 'Azib:
(and he was not a liar) We used to pray behind the Prophet and when he said, "Sami' a-l-lahu Li –
man hamida", none of us would bend his back (to go for prostration) till the Prophet had placed his,
forehead on the ground.