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.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
nasai-kubra:681 – Qutaybah b. Saʿīd > ʿAbdullāh b. Nāfiʿ > Muḥammad b. ʿAbdullāh b. Ḥasan > Abū al-Zinād > al-Aʿraj > Abū Hurayrah

[Machine] The Messenger of Allah, ﷺ , said, "One of you may unintentionally break his prayer and bless as a camel does." And he said another time, "One of you may unintentionally break his prayer and bless as a camel does."  

الكبرى للنسائي:٦٨١ – أَخْبَرَنَا قُتَيْبَةُ بْنُ سَعِيدٍ قَالَ حَدَّثَنَا عَبْدُ اللهِ بْنُ نَافِعٍ عَنْ مُحَمَّدِ بْنِ عَبْدِ اللهِ بْنِ حَسَنٍ عَنْ أَبِي الزِّنَادِ عَنِ الْأَعْرَجِ عَنْ أَبِي هُرَيْرَةَ قَالَ

قال رَسُولُ اللهِ ﷺ «يَعْمِدُ أَحَدُكُمْ فِي صَلَاتِهِ فَيَبْرُكُ كَمَا يَبْرُكُ الْجَمَلُ» وَقَالَ مَرَّةً أُخْرَى يَعْمِدُ أَحَدُكُمْ فَيَبْرِكُ فِي صَلَاتِهِ بَرْكَ الْجَمَلِ  

See similar narrations below:

Collected by Nasāʾī, Abū Dāwūd
nasai:1090 – Qutaybah > ʿAbdullāh b. Nāfiʿ > Muḥammad b. ʿAbdullāh b. Ḥasan > Abū al-Zinād > al-Aʿraj > Abū Hurayrah

"The Messenger of Allah ﷺ said: 'Is there any one of you who kneel as a camel kneels when praying?'"  

النسائي:١٠٩٠ – أَخْبَرَنَا قُتَيْبَةُ قَالَ حَدَّثَنَا عَبْدُ اللَّهِ بْنُ نَافِعٍ عَنْ مُحَمَّدِ بْنِ عَبْدِ اللَّهِ بْنِ حَسَنٍ عَنْ أَبِي الزِّنَادِ عَنِ الأَعْرَجِ عَنْ أَبِي هُرَيْرَةَ قَالَ

قَالَ رَسُولُ اللَّهِ ﷺ يَعْمِدُ أَحَدُكُمْ فِي صَلاَتِهِ فَيَبْرُكَ كَمَا يَبْرُكُ الْجَمَلُ  

abudawud:841 – Qutaybah b. Saʿīd > ʿAbdullāh b. Nāfiʿ > Muḥammad b. ʿAbdullāh b. Ḥasan > Abū al-Zinād > al-Aʿraj > Abū Hurayrah

The Prophet ﷺ said: (Does) one of you kneel down in his prayer as a camel kneels down (i.e. put his knees before his hands).  

أبو داود:٨٤١ – حَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ حَدَّثَنَا عَبْدُ اللَّهِ بْنُ نَافِعٍ عَنْ مُحَمَّدِ بْنِ عَبْدِ اللَّهِ بْنِ حَسَنٍ عَنْ أَبِي الزِّنَادِ عَنِ الأَعْرَجِ عَنْ أَبِي هُرَيْرَةَ قَالَ

قَالَ رَسُولُ اللَّهِ ﷺ يَعْمِدُ أَحَدُكُمْ فِي صَلاَتِهِ فَيَبْرُكُ كَمَا يَبْرُكُ الْجَمَلُ