Chapter: To prostrate on seven bones
Narrated Al-Bara' bin `Azib:(He was not a liar) We used to pray behind the Prophet (ﷺ) and when he said, "Sami`a l-lahu liman hamidah", none of us would bend his back (to go for prostration) till the Prophet (ﷺ) had placed his, forehead on the ground.
Reference
Sahih al-Bukhari 811
In-book reference
Book 10, Hadith 206
USC-MSA web (English)
Vol. 1, Book 12, Hadith 775
Translation by Dr. M. Muhsin Khan · Language: EN
Sahih
Arabic Text
حَدَّثَنَا آدَمُ، حَدَّثَنَا إِسْرَائِيلُ، عَنْ أَبِي إِسْحَاقَ، عَنْ عَبْدِ اللَّهِ بْنِ يَزِيدَ الْخَطْمِيِّ، حَدَّثَنَا الْبَرَاءُ بْنُ عَازِبٍ ـ وَهْوَ غَيْرُ كَذُوبٍ ـ قَالَ كُنَّا نُصَلِّي خَلْفَ النَّبِيِّ صلى الله عليه وسلم فَإِذَا قَالَ سَمِعَ اللَّهُ لِمَنْ حَمِدَهُ. لَمْ يَحْنِ أَحَدٌ مِنَّا ظَهْرَهُ حَتَّى يَضَعَ النَّبِيُّ صلى الله عليه وسلم جَبْهَتَهُ عَلَى الأَرْضِ.