Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
muslim:474a[Chain 1] Aḥmad b. Yūnus > Zuhayr > Abū Isḥāq [Chain 2] Yaḥyá b. Yaḥyá > Abū Khaythamah > Abū Isḥāq > ʿAbdullāh b. Yazīd

They used to say prayer behind the Messenger of Allah ﷺ. I never saw anyone bending his back at the time when he (the Holy Prophet) raised his head, till the Messenger of Allah ﷺ placed his forehead on the ground. They then fell in prostration after him.  

مسلم:٤٧٤aحَدَّثَنَا أَحْمَدُ بْنُ يُونُسَ حَدَّثَنَا زُهَيْرٌ حَدَّثَنَا أَبُو إِسْحَاقَ ح قَالَ وَحَدَّثَنَا يَحْيَى بْنُ يَحْيَى أَخْبَرَنَا أَبُو خَيْثَمَةَ عَنْ أَبِي إِسْحَاقَ عَنْ عَبْدِ اللَّهِ بْنِ يَزِيدَ قَالَ

حَدَّثَنِي الْبَرَاءُ وَهُوَ غَيْرُ كَذُوبٍ أَنَّهُمْ كَانُوا يُصَلُّونَ خَلْفَ رَسُولِ اللَّهِ ﷺ فَإِذَا رَفَعَ رَأْسَهُ مِنَ الرُّكُوعِ لَمْ أَرَ أَحَدًا يَحْنِي ظَهْرَهُ حَتَّى يَضَعَ رَسُولُ اللَّهِ ﷺ جَبْهَتَهُ عَلَى الأَرْضِ ثُمَّ يَخِرُّ مَنْ وَرَاءَهُ سُجَّدًا  


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Collected by Bayhaqī
bayhaqi:2596Abū ʿAbdullāh al-Ḥāfiẓ > Abū Bakr b. Isḥāq > Ismāʿīl b. Qutaybah > Yaḥyá b. Yaḥyá > Abū Khaythamah > Abū Isḥāq > ʿAbdullāh b. Yazīd

They used to say prayer behind the Messenger of Allah ﷺ. I never saw anyone bending his back at the time when he (the Holy Prophet) raised his head, till the Messenger of Allah ﷺ placed his forehead on the ground. They then fell in prostration after him. (Using translation from Muslim 474a)   

البيهقي:٢٥٩٦أَخْبَرَنَا أَبُو عَبْدِ اللهِ الْحَافِظُ ثنا أَبُو بَكْرِ بْنُ إِسْحَاقَ أنبأ إِسْمَاعِيلُ بْنُ قُتَيْبَةَ ثنا يَحْيَى بْنُ يَحْيَى ثنا أَبُو خَيْثَمَةَ عَنْ أَبِي إِسْحَاقَ قَالَ حَدَّثَنِي عَبْدُ اللهِ بْنُ يَزِيدَ قَالَ

حَدَّثَنِي الْبَرَاءُ وَهُوَ غَيْرُ كَذُوبٍ أَنَّهُمْ كَانُوا يُصَلُّونَ خَلْفَ رَسُولِ اللهِ ﷺ فَإِذَا رَفَعَ رَأْسَهُ مِنَ الرُّكُوعِ لَمْ أَرَ أَحَدًا يَحْنِي ظَهْرَهُ حَتَّى يَضَعَ رَسُولُ اللهِ ﷺ جَبْهَتَهُ عَلَى الْأَرْضِ ثُمَّ يَخِرَّ مَنْ وَرَاءَهُ سُجَّدًا  

رَوَاهُ مُسْلِمٌ فِي الصَّحِيحِ عَنْ يَحْيَى بْنِ يَحْيَى وَأَخْرَجَهُ الْبُخَارِيُّ مِنْ أَوْجُهٍ أُخَرَ عَنْ أَبِي إِسْحَاقَ السَّبِيعِيِّ