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.
suyuti:1959a

when one of you prostrates himself, he should not stretch out his forearms( on the ground) like a dog and he should join both of his thighs. (Using translation from Abū Dāʾūd 901)   

السيوطي:١٩٥٩a

"إذا سجدَ أحدُكم فلا يفترشْ يديه افتراشَ الكلبِ، وليضُمَّ فَخذَيه".  

[د] أبو داود [ق] البيهقى في السنن عن أبي هريرة

See similar narrations below:

Collected by Abū Dāwūd, Ibn Mājah, Aḥmad, Ibn Ḥibbān, Suyūṭī
abudawud:901ʿAbd al-Malik b. Shuʿayb b. al-Layth > Ibn Wahb > al-Layth > Darrāj > Ibn Ḥujayrah > Abū Hurayrah

when one of you prostrates himself, he should not stretch out his forearms( on the ground) like a dog and he should join both of his thighs.  

أبو داود:٩٠١حَدَّثَنَا عَبْدُ الْمَلِكِ بْنُ شُعَيْبِ بْنِ اللَّيْثِ حَدَّثَنَا ابْنُ وَهْبٍ حَدَّثَنَا اللَّيْثُ عَنْ دَرَّاجٍ عَنِ ابْنِ حُجَيْرَةَ عَنْ أَبِي هُرَيْرَةَ

أَنَّ النَّبِيَّ ﷺ قَالَ إِذَا سَجَدَ أَحَدُكُمْ فَلاَ يَفْتَرِشْ يَدَيْهِ افْتِرَاشَ الْكَلْبِ وَلْيَضُمَّ فَخِذَيْهِ  

ibnmajah:891ʿAlī b. Muḥammad > Wakīʿ > al-Aʿmash > Abū Sufyān > Jābir

The Messenger of Allah ﷺ said: “When anyone of you prostrates let him be balanced in prostration, and not spread his arms as a dog does.”  

ابن ماجة:٨٩١حَدَّثَنَا عَلِيُّ بْنُ مُحَمَّدٍ حَدَّثَنَا وَكِيعٌ عَنِ الأَعْمَشِ عَنْ أَبِي سُفْيَانَ عَنْ جَابِرٍ قَالَ قَالَ

رَسُولُ اللَّهِ ﷺ إِذَا سَجَدَ أَحَدُكُمْ فَلْيَعْتَدِلْ وَلاَ يَفْتَرِشْ ذِرَاعَيْهِ افْتِرَاشَ الْكَلْبِ  

ahmad:14384Abaw Muʿāwiyah And Wakīʿ > al-Aʿmash > Abū Sufyānaʿan Jābir

The Messenger of Allah ﷺ said: “When anyone of you prostrates let him be balanced in prostration, and not spread his arms as a dog does.” (Using translation from Ibn Mājah 891)  

أحمد:١٤٣٨٤حَدَّثَنَا أَبَو مُعَاوِيَةَ وَوَكِيعٌ قَالَا حَدَّثَنَا الْأَعْمَشُ عَنْ أَبِي سُفْيَانَعَنْ جَابِرٍ قَالَ

قَالَ رَسُولُ اللهِ ﷺ إِذَا سَجَدَ أَحَدُكُمْ فَلْيَعْتَدِلْ وَلَا يَفْتَرِشْ ذِرَاعَيْهِ افْتِرَاشَ الْكَلْبِ  

ahmad:15178ʿAbd al-Razzāq > Sufyān > al-Aʿmash > Abū Sufyān > Jābir

The Messenger of Allah ﷺ said: “When anyone of you prostrates let him be balanced in prostration, and not spread his arms as a dog does.” (Using translation from Ibn Mājah 891)  

أحمد:١٥١٧٨حَدَّثَنَا عَبْدُ الرَّزَّاقِ أَخْبَرَنَا سُفْيَانُ عَنِ الْأَعْمَشِ عَنْ أَبِي سُفْيَانَ عَنْ جَابِرٍ قَالَ

قَالَ رَسُولُ اللهِ ﷺ إِذَا سَجَدَ أَحَدُكُمْ فَلْيَعْتَدِلْ وَلَا يَفْتَرِشْ ذِرَاعَيْهِ افْتِرَاشَ الْكَلْبِ  

ahmad:14276Muḥammad b. Fuḍayl > al-Aʿmash > Abū Sufyān > Jābir

The Messenger of Allah ﷺ said: “When anyone of you prostrates let him be balanced in prostration, and not spread his arms as a dog does.” (Using translation from Ibn Mājah 891)   

أحمد:١٤٢٧٦حَدَّثَنَا مُحَمَّدُ بْنُ فُضَيْلٍ حَدَّثَنَا الْأَعْمَشُ عَنْ أَبِي سُفْيَانَ عَنْ جَابِرٍ قَالَ

قَالَ رَسُولُ اللهِ ﷺ إِذَا صَلَّى أَحَدُكُمْ فَلَا يَفْتَرِشْ ذِرَاعَيْهِ افْتِرَاشَ الْكَلْبِ  

ذِكْرُ الْأَمْرِ بِضَمِّ الْفَخِذَيْنِ عِنْدَ السُّجُودِ لِلْمُصَلِّي

ibnhibban:1917Muḥammad b. ʿAbdullāh b. ʿAbd al-Salām Bibayrūt > ʿAbd al-Raḥman b. ʿAbdullāh b. ʿAbd al-Ḥakam from my father > al-Layth b. Saʿd > Darrāj > Ibn Ḥujayrah > Abū Hurayrah

when one of you prostrates himself, he should not stretch out his forearms( on the ground) like a dog and he should join both of his thighs. (Using translation from Abū Dāʾūd 901)   

ابن حبّان:١٩١٧أَخْبَرَنَا مُحَمَّدُ بْنُ عَبْدِ اللَّهِ بْنِ عَبْدِ السَّلَامِ بِبَيْرُوتَ حَدَّثَنَا عَبْدُ الرَّحْمَنِ بْنُ عَبْدِ اللَّهِ بْنِ عَبْدِ الْحَكَمِ حَدَّثَنَا أَبِي عَنِ اللَّيْثِ بْنِ سَعْدٍ عَنْ دَرَّاجٍ عَنِ ابْنِ حُجَيْرَةَ عَنْ أَبِي هُرَيْرَةَ

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ «إِذَا سَجَدَ أَحَدُكُمْ فَلَا يَفْتَرِشِ افْتِرَاشَ الْكَلْبِ وَلْيَضُمَّ فَخِذَيْهِ»  

suyuti:1960a

Anas reported the Messenger of Allah ﷺ as saying; Adopt a moderate position when prostrating yourselves, and see that none of you stretches out his forearms(on the ground) like a dog. (Using translation from Abū Dāʾūd 897)   

السيوطي:١٩٦٠a

"إذا سَجَدَ أحدُكْم فليَعْتَدِلْ، ولا يفترشْ ذِرَاعَيه افتراشَ الكلبِ".  

[عب] عبد الرازق [ش] ابن أبى شيبة [حم] أحمد [ت] الترمذي حسن صحيح، [هـ] ابن ماجة [ع] أبو يعلى [بز] البزّار في سننه ، (وابن خزيمة)، [طب] الطبرانى في الكبير [ض] ضياء المقدسي في مختاره عن جابر، [ش] ابن أبى شيبة عن علي موقوفًا