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:2-485bʿṬāʾ b. By Rbāḥ > Balghaná n ʿUmr b. al-Khṭāb
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السيوطي:٢-٤٨٥b

"عَنْ عطاءِ بن أبي رباحٍ قال: بَلغَنى أن عُمرَ بن الخطابِ سمعَ رجلًا يتكلم بالفارسية في الطّوَافِ، فَأخذ بِعَضُدَيه وقال: ابتغ إلى العربيَّة سبيلًا".  

الحربى، [هب] البيهقى في شعب الإيمان