A man amongst us begot a boy whom he named Al-Qâsim. On that the said (to the man), "We will never call you Abul-Qâsim and will never please you with this blessed title." So, he went to the Prophet (ﷺ) and said, "O Allâh's Messenger! I have begotten a boy whom I named Al-Qâsim and the said, 'We will never call you Abul-Qasim, nor will we please you with this title. ' " The Prophet (ﷺ) said, "The have done well. Name by my name, but do not name by my Kunya, for I am Qâsim. ' [4:345-0.B]