Abu Qasim said, "Name yourselves with my name, but do not take my kunya as your own."
قال أبو القاسم: سموا باسمي، ولا تكتنوا بكنيتي.
Bukhari related it in al-Adab (6188), and Muslim in al-Adab (2134), both through the route of Sufyan bin Uyayna, from Ayub, from Muhammad bin Sirin, who said, "I heard Abu Hurairah say," then he mentioned it.