Good Manners and Form (Al-Adab)
78/106. Chapter:
"Name yourselves by my name, but do not call yourselves by my Kunyah."
قَالَهُ أَنَسٌ عَنِ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ.
Sahih Bukhari
حَدَّثَنَا مُسَدَّدٌ، حَدَّثَنَا خَالِدٌ، حَدَّثَنَا حُصَيْنٌ، عَنْ سَالِمٍ، عَنْ جَابِرٍ ـ رضى الله عنه ـ قَالَ وُلِدَ لِرَجُلٍ مِنَّا غُلاَمٌ فَسَمَّاهُ الْقَاسِمَ فَقَالُوا لاَ نَكْنِيهِ حَتَّى نَسْأَلَ النَّبِيَّ صلى الله عليه وسلم فَقَالَ " سَمُّوا بِاسْمِي، وَلاَ تَكْتَنُوا بِكُنْيَتِي ".
Narrated Jabi: A man among us begot a boy whom he named Al-Qasim. The people said, "We will not call him (i.e., the father) by that Kuniya (Abu-l-Qasim) till we ask the Prophet (ﷺ) about it. The Prophet (ﷺ) said. "Name yourselves by my name, but do not call (yourselves) by my Kuniya."
Reference : Sahih al-Bukhari 6187In-book reference : Book 78, Hadith 211USC-MSA web (English) reference : Vol. 8, Book 73, Hadith 206