Sahih al-Bukhari 94
Book 3: Knowledge · Hadith 36
Hadith text
حَدَّثَنَا عَبْدَةُ، قَالَ حَدَّثَنَا عَبْدُ الصَّمَدِ، قَالَ حَدَّثَنَا عَبْدُ اللَّهِ بْنُ الْمُثَنَّى، قَالَ حَدَّثَنَا ثُمَامَةُ بْنُ عَبْدِ اللَّهِ، عَنْ أَنَسٍ، عَنِ النَّبِيِّ صلى الله عليه وسلم أَنَّهُ كَانَ إِذَا سَلَّمَ سَلَّمَ ثَلاَثًا، وَإِذَا تَكَلَّمَ بِكَلِمَةٍ أَعَادَهَا ثَلاَثًا.
Narrated Anas:Whenever the Prophet (ﷺ) asked permission to enter, he knocked the door thrice with greeting and whenever he spoke a sentence (said a thing) he used to repeat it thrice. (See Hadith No. 261, Vol)
Anas (رضی اللہ عنہ) se riwayat hai ke jab Nabi (ﷺ) kisi ghar mein daakhil hone ki ijazat mangte, to salaam ke saath teen baar darwaza khatkhataate, aur jab koi baat kehte to teen baar dohraate.
Sahih al-Bukhari 94 · Book 3, Hadith 36