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.
nasai-kubra:9291ʿUthmān b. ʿAbdullāh > Aḥmad b. Janāb > ʿĪsá b. Yūnus > Hishām b. ʿUrwah from his father > Ibn ʿUmar

[Machine] The Messenger of Allah ﷺ said, "Dye your gray hair and do not imitate the Jews." Muhammad bin Kunasah contradicted him, narrated it from Hisham bin Urwah, from Uthman bin Urwah, from his father, from Zubair.  

الكبرى للنسائي:٩٢٩١أَخْبَرَنِي عُثْمَانُ بْنُ عَبْدِ اللهِ قَالَ حَدَّثَنَا أَحْمَدُ بْنُ جَنَابٍ قَالَ حَدَّثَنَا عِيسَى بْنُ يُونُسَ عَنْ هِشَامِ بْنِ عُرْوَةَ عَنْ أَبِيهِ عَنِ ابْنِ عُمَرَ قَالَ

قَالَ رَسُولُ اللهِ ﷺ «غَيِّرُوا الشَّيْبَ وَلَا تَشَبَّهُوا بِالْيَهُودِ» خَالَفَهُ مُحَمَّدُ بْنُ كُنَاسَةَ رَوَاهُ عَنْ هِشَامِ بْنِ عُرْوَةَ عَنْ عُثْمَانَ بْنَ عُرْوَةَ عَنْ أَبِيهِ عَنِ الزُّبَيْرِ