Sahih Muslim 5638
صحيح مسلم#5638SahihSahl b. Sa'd as-Sa'id reported that a person peeped through the hole of the door of Allah's Messenger (ﷺ), and at that time Allah's Messenger (ﷺ) had with him a scratching instrument with which he had been scratching his head. When Allah's Messenger (ﷺ) saw him. he said:If I were to know that you had been peeping through the door, I would have thrust that into your eyes, and Allah's Messenger (ﷺ) said: Permission is needed as a protection against glance
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih Muslim is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 38:53