Narrated Jabir: A boy was born for a man among us, and the man named him Al-Qasim. We said to him, "We will not call you Abu-lQasim, nor will we respect you for that." The Prophet was informed about that, and he said, "Name your son 'AbdurRahman."
— Sahih Bukhari, Volume 8, Book 73: Good Manners and Form (Al-Adab), Hadith #205