It is narrated from Sayyiduna Jabir (may Allah be pleased with him) that a child was born to an Ansari, and he named him Qasim. We said to him, "We will not let you keep this kunyah until we ask the Prophet (peace and blessings of Allah be upon him)." So we came to the Prophet (peace and blessings of Allah be upon him) and asked him. The Prophet (peace and blessings of Allah be upon him) said, "Name yourselves after my name, but do not take my kunyah, because I have been sent among you as the one who distributes."