Sunan An Nasai
3094
It was narrated from 'Ubaidullah bin 'Abdullah bin 'Utbah bin Mas'ud that Abu Hurairah said:
When the Messenger of Allah (ﷺ) died and Abu Bakr (was appointed Khalifah) after him, and some of the 'Arabs disbelieved, 'Umar, may Allah be pleased..
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