Narrated Anas:
Whenever the Prophet (ﷺ) spoke a sentence (said a thing), he used to repeat it thrice so that the people could understand it properly from him and whenever he asked permission to enter, (he knocked the door) thrice with greeting.
Reference | : Sahih al-Bukhari 95 |
In-book reference | : Book 3, Hadith 37 |
USC-MSA web (English) reference | : Vol. 1, Book 3, Hadith 95 |
(deprecated numbering scheme) |