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
bayhaqi:18325 – Abū Naṣr b. Qatādah > Abū al-Faḍl b. Khamīrawayh > Aḥmad b. Najdah > al-Ḥasan b. al-Rabīʿ > ʿAbdullāh b. al-Mubārak > Sufyān > ʿAmr b. Dīnār > ʿAbd al-Raḥman b. Farrūkh from his father > Katab ʿUmar b. al-Khaṭṭāb

[Machine] Not to differentiate between two enslaved brothers in the sale.  

البيهقي:١٨٣٢٥ – أَخْبَرَنَا أَبُو نَصْرِ بْنُ قَتَادَةَ أنبأ أَبُو الْفَضْلِ بْنُ خَمِيرَوَيْهِ أنبأ أَحْمَدُ بْنُ نَجْدَةَ ثنا الْحَسَنُ بْنُ الرَّبِيعِ ثنا عَبْدُ اللهِ بْنُ الْمُبَارَكِ عَنْ سُفْيَانَ عَنْ عَمْرِو بْنِ دِينَارٍ عَنْ عَبْدِ الرَّحْمَنِ بْنِ فَرُّوخَ عَنْ أَبِيهِ قَالَ كَتَبَ عُمَرُ بْنُ الْخَطَّابِ ؓ

أَنْ لَا يُفَرَّقَ بَيْنَ أَخَوَيْنِ مَمْلُوكَيْنِ فِي الْبَيْعِ