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.
tabarani:530ʿUbayd b. Ghannām b. Ḥafṣ b. Ghiyāth > Muḥammad b. ʿAbdullāh b. Numayr > Māt

[Machine] The passage translates to: "Ibn Numayr's son says, 'In the caliphate of Uthman.'"  

الطبراني:٥٣٠حَدَّثَنَا عُبَيْدُ بْنُ غَنَّامِ بْنِ حَفْصِ بْنِ غِيَاثٍ ثنا مُحَمَّدُ بْنُ عَبْدِ اللهِ بْنِ نُمَيْرٍ قَالَ «§مَاتَ أُبَيُّ بْنُ كَعْبٍ ؓ فِي خِلَافَةِ عُمَرَ سَنَةَ اثْنَتَيْنِ وَعِشْرِينَ» قَالَ

ابْنُ نُمَيْرٍ وَيَقُولُ بَعْضُهُمْ «فِي خِلَافَةِ عُثْمَانَ ؓ»