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.
bayhaqi:2274Abū al-Ḥasan b. ʿAbdān > Abū Bakr b. Maḥmawayh al-ʿAskarī > Jaʿfar b. Muḥammad al-Qalānisī > Ādam > Shuʿbah > ʿĀṣim al-Aḥwal > Abū ʿUthmān > ʿUmar b. al-Khaṭṭāb

[Machine] He said, "Learn Arabic."  

البيهقي:٢٢٧٤أَخْبَرَنَا أَبُو الْحَسَنِ بْنُ عَبْدَانَ أنبأ أَبُو بَكْرِ بْنُ مَحْمَوَيْهِ الْعَسْكَرِيُّ ثنا جَعْفَرُ بْنُ مُحَمَّدٍ الْقَلَانِسِيُّ ثنا آدَمُ ثنا شُعْبَةُ عَنْ عَاصِمٍ الْأَحْوَلِ عَنْ أَبِي عُثْمَانَ عَنْ عُمَرَ بْنِ الْخَطَّابِ ؓ

أَنَّهُ قَالَ تَعَلَّمُوا الْعَرَبِيَّةَ