Sahih al-Bukhari 1045
صحيح البخاري#1045SahihNarrated `Abdullah bin `Amr:"When the sun eclipsed in the lifetime of Allah's Messenger (ﷺ) an announcement was made that a prayer was to be offered in congregation
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: 16:6