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
muslim:493b – [Chain 1] Muḥammad b. al-Muthanná And Ibn Bashhār > Muḥammad b. Jaʿfar [Chain 2] And Ḥaddathanīh Yaḥyá b. Ḥabīb > Khālid / Ibn al-Ḥārith

" None of you should stretch out his forearms like the stretching out of a dog."  

مسلم:٤٩٣b – حَدَّثَنَا مُحَمَّدُ بْنُ الْمُثَنَّى وَابْنُ بَشَّارٍ قَالاَ حَدَّثَنَا مُحَمَّدُ بْنُ جَعْفَرٍ ح قَالَ وَحَدَّثَنِيهِ يَحْيَى بْنُ حَبِيبٍ حَدَّثَنَا خَالِدٌ يَعْنِي ابْنَ الْحَارِثِ قَالاَ

حَدَّثَنَا شُعْبَةُ بِهَذَا الإِسْنَادِ وَفِي حَدِيثِ ابْنِ جَعْفَرٍ وَلاَ يَتَبَسَّطْ أَحَدُكُمْ ذِرَاعَيْهِ انْبِسَاطَ الْكَلْبِ