Narrated Anas bin Malik:

While the Prophet was in the market, somebody, called, "O Abu-l-Qasim." The Prophet turned to him. The man said, "I have called to this (i.e. another man)." The Prophet ﷺ said, "Name yourselves by my name but not by my Kuniya (name)." (In Arabic world it is the custom to call the man as the father of his eldest son, e.g. Abu-l-Qasim.) (See Hadith No. 737, Vol. 4)

حَدَّثَنَا آدَمُ بْنُ أَبِي إِيَاسٍ، حَدَّثَنَا شُعْبَةُ، عَنْ حُمَيْدٍ الطَّوِيلِ، عَنْ أَنَسِ بْنِ مَالِكٍ ـ رضى الله عنه ـ قَالَ كَانَ النَّبِيُّ ﷺ فِي السُّوقِ، فَقَالَ رَجُلٌ يَا أَبَا الْقَاسِمِ. فَالْتَفَتَ إِلَيْهِ النَّبِيُّ ﷺ فَقَالَ إِنَّمَا دَعَوْتُ هَذَا. فَقَالَ النَّبِيُّ ﷺ
" سَمُّوا بِاسْمِي، وَلاَ تَكَنَّوْا بِكُنْيَتِي ".