Language:
كتاب البيوع
34  
Sales and Trade
(49)
Chapter: What is said about markets
(49)
باب مَا ذُكِرَ فِي الأَسْوَاقِ
Sahih al-Bukhari 2121

Narrated Anas:

A man at Al-Baqi' called, "O Abul-Qasim!" The Prophet (ﷺ) turned to him and the man said (to the Prophet ), "I did not intend to call you." The prophet said, "Name yourselves by my name but not by my Kunya (name).

حَدَّثَنَا مَالِكُ بْنُ إِسْمَاعِيلَ، حَدَّثَنَا زُهَيْرٌ، عَنْ حُمَيْدٍ، عَنْ أَنَسٍ ـ رضى الله عنه ـ دَعَا رَجُلٌ بِالْبَقِيعِ يَا أَبَا الْقَاسِمِ‏.‏ فَالْتَفَتَ إِلَيْهِ النَّبِيُّ صلى الله عليه وسلم فَقَالَ لَمْ أَعْنِكَ‏.‏ قَالَ ‏ "‏ سَمُّوا بِاسْمِي، وَلاَ تَكْتَنُوا بِكُنْيَتِي ‏"‏‏.‏
Reference : Sahih al-Bukhari 2121
In-book reference : Book 34, Hadith 74
USC-MSA web (English) reference : Vol. 3, Book 34, Hadith 332
  (deprecated numbering scheme)