صحيح البخاري
Bukhari
كتاب الأذان (صفة الصلوة)The Book of Adhan (Sufa-tus-Salat)
بَابُ حَدِّ إِتْمَامِ الرُّكُوعِ وَالاِعْتِدَالِ فِيهِ وَالاِطْمَأْنِينَةِ:
Chapter. And what is said regarding the limit of the completion of bowing and of keeping the back straight and the calmness with which it is performed.
Hadith 792
وَقَالَ أَبُو حُمَيْدٍ فِي أَصْحَابِهِ : رَكَعَ النَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ ، ثُمَّ هَصَرَ ظَهْرَهُ .
Abu Humayd (may Allah be pleased with him) said to his companions that the Prophet (peace and blessings of Allah be upon him) performed rukū‘, then bent his back completely.
حَدَّثَنَا بَدَلُ بْنُ الْمُحَبَّرِ ، قَالَ : حَدَّثَنَا شُعْبَةُ ، قَالَ : أَخْبَرَنِي الْحَكَمُ ، عَنْ ابْنِ أَبِي لَيْلَى ، عَنْ الْبَرَاءِ ، قَالَ : " كَانَ رُكُوعُ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ وَسُجُودُهُ وَبَيْنَ السَّجْدَتَيْنِ ، وَإِذَا رَفَعَ رَأْسَهُ مِنَ الرُّكُوعِ مَا خَلَا الْقِيَامَ وَالْقُعُودَ قَرِيبًا مِنَ السَّوَاءِ " .
Narrated Al-Bara: The bowing, the prostration the sitting in between the two prostrations and the standing after the bowing of the Prophet but not qiyam (standing in the prayer) and qu`ud (sitting in the prayer) used to be approximately equal (in duration).
