حَدَّثَنَا أَبُو عُمَرَ، قَالَ: حَدَّثَنَا شُعْبَةُ، عَنْ حُمَيْدٍ، عَنْ أَنَسٍ قَالَ: كَانَ النَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فِي السُّوقِ، فَقَالَ رَجُلٌ: يَا أَبَا الْقَاسِمِ، فَالْتَفَتَ النَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ، فَقَالَ: دَعَوْتُ هَذَا، فَقَالَ: ”سَمُّوا بِاسْمِي، وَلاَ تُكَنُّوا بِكُنْيَتِي.“
It is narrated from Sayyiduna Anas (may Allah be pleased with him) that the Prophet (peace and blessings of Allah be upon him) was in the market when a man called out: "O Abu al-Qasim!" The Prophet (peace be upon him) turned towards him, so the man said: "I was calling him," meaning another person. Then the Prophet (peace be upon him) said: "Name yourselves with my name, but do not take my kunyah (Abu al-Qasim) as your kunyah."