Sahih al-Bukhari 1806
صحيح البخاري#1806SahihNarrated Nafi`:When `Abdullah bin `Umar set out for Mecca intending to perform Umra, at the time of afflictions, he said, "If I should be prevented from reaching the Ka`ba, then I would do the same as Allah's Messenger (ﷺ) did, so I assume the Ihram for Umra as Allah's Messenger (ﷺ) assumed the Ihram for Umra in the year of Hudaibiya
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih al-Bukhari is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 27:1