From Sahih Muslim (Hadith 5586):
Anas reported that person at Baqi' called another person as" Abu'l- Qasim," and Allah's Messenger (ﷺ) turned towards him. He (the person who had uttered these words) said:Messenger of Allah, I did not mean you, but I called such and such (person), whereupon Allah's Messenger (ﷺ) said: You may call yourself by my name, but not by my kunya
Reference: Muslim 5586