Sunan Abu Dawud
Prayer (Kitab Al-Salat)
Hadith #506
2.506
حَدَّثَنَا الرَّبِيعُ بْنُ نَافِعٍ أَبُو تَوْبَةَ، حَدَّثَنَا شَرِيكٌ، عَنْ أَبِي إِسْحَاقَ، قَالَ وَصَفَ لَنَا الْبَرَاءُ بْنُ عَازِبٍ فَوَضَعَ يَدَيْهِ وَاعْتَمَدَ عَلَى رُكْبَتَيْهِ وَرَفَعَ عَجِيزَتَهُ وَقَالَ هَكَذَا كَانَ رَسُولُ اللَّهِ صلى الله عليه وسلم يَسْجُدُ .
Narrated Al-Bara' ibn Azib: Al-Bara' described to us (the nature of prostration). He placed his hands (palms), reclined on his knees, and raised his hips; he said: This is how the Messenger of Allah (ﷺ) used to prostrate himself