A man came. Uthman's version has: Sa'd ibn AbuWaqqas came. He stood at the door. Uthman's version has: (He stood) facing the door. The Prophet (ﷺ) said to him: Away from it, (stand) this side or that side. Asking permission is meant to escape from the look of an eye.
Sunan Abi Dawud Book 43, Hadith 402
← Previous Hadith The Prophet (ﷺ) said: When one has a look into the house, then there is no (need of) permission.

Sunan Abi Dawud Book 43, Hadith 401 Next Hadith → A similar tradition has also been transmitted by Talhah b. Musarrif from a man from Sa’d from the prophet (May peace be upon him) through a different chain of narrators.

Sunan Abi Dawud Book 43, Hadith 403