Good Manners and Form (Al-Adab)
78/44. Chapter:
Calling bad names and cursing
Sahih Bukhari
حَدَّثَنَا مُحَمَّدُ بْنُ سِنَانٍ، حَدَّثَنَا فُلَيْحُ بْنُ سُلَيْمَانَ، حَدَّثَنَا هِلاَلُ بْنُ عَلِيٍّ، عَنْ أَنَسٍ، قَالَ لَمْ يَكُنْ رَسُولُ اللَّهِ صلى الله عليه وسلم فَاحِشًا وَلاَ لَعَّانًا وَلاَ سَبَّابًا، كَانَ يَقُولُ عِنْدَ الْمَعْتَبَةِ " مَا لَهُ، تَرِبَ جَبِينُهُ ".
Narrated Anas: Allah's Messenger (ﷺ) was neither a Fahish (one who had a bad tongue) nor a Sabbaba (one who abuses others) and he used to say while admonishing somebody, "What is wrong with him? May dust be on his forehead!"
Reference : Sahih al-Bukhari 6046In-book reference : Book 78, Hadith 76USC-MSA web (English) reference : Vol. 8, Book 73, Hadith 72