(356) بَابُ أَحَبِّ الأسْمَاءِ إِلَى اللهِ عَزَّ وَجَلَّ
Jabir said, "A man had a child and named him al-Qasim. We said,'We will not give you the kunya Abu'l-Qasim nor will we so honour you.The Prophet, may Allah bless him and grant him peace, was told and said,'Call your son 'Abdu'r-Rahman.'"
Reference: Al-Adab Al-Mufrad 815
In-book reference: Book 34, Hadith 5
English translation: Book 34, Hadith 815