Sahih al-Bukhari 2885
صحيح البخاري#2885SahihNarrated `Aisha:The Prophet (ﷺ) was vigilant one night and when he reached Medina, he said, "Would that a pious man from my companions guard me tonight!" Suddenly we heard the clatter of arms. He said, "Who is that? " He (The new comer) replied, " I am Sa`d bin Abi Waqqas and have come to guard you." So, the Prophet (ﷺ) slept (that night)
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: 56:100