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
suyuti:22142a –
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السيوطي:٢٢١٤٢a –

"مَنْ صَلَّى مِنْكُمْ فَلا يَفْتَرش افْتِرَاشَ الْكَلْبِ ذِرَاعَيهِ".  

[طب] الطبرانى في الكبير عن ابن عمر

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Collected by Aḥmad
ahmad:14276 – Muḥammad 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:١٤٢٧٦ – حَدَّثَنَا مُحَمَّدُ بْنُ فُضَيْلٍ حَدَّثَنَا الْأَعْمَشُ عَنْ أَبِي سُفْيَانَ عَنْ جَابِرٍ قَالَ

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