Sahih al-Bukhari 1667
صحيح البخاري#1667SahihNarrated Usama bin Zaid:As soon as the Prophet (ﷺ) departed from `Arafat, he went towards the mountain pass, and there he answered the call of nature. He was asked, "O Allah's Messenger (ﷺ)! Will you offer the prayer here?" He replied, "(The place of) the prayer is ahead of you (i.e. at Al-Muzdalifa)
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: 25:148