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Bukhari :: Book 3 :: Volume 34 :: Hadith 332

Narrated Anas:

A man at Al-Baqi' called, "O Abu-l-Qasim!" The Prophet 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 kuniya (name)."

Source materials are from the University of Southern California MSA site
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