Sahih al-Bukhari 4858
صحيح البخاري#4858SahihNarrated `Abdullah:(regarding the revelation) Truly he (Muhammad) did see of the signs of his Lord; the Greatest!' (53.18) The Prophet (ﷺ) saw a green screen covering the horizon
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: 65:379