عَنْ أَنَسٍ رَضِيَ اللَّهُ عَنْهُ أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ كَانَ بِالْبَقِيعِ فَنَادَى رَجُلٌ يَا أَبَا الْقَاسِمِ فَالْتَفَتَ إِلَيْهِ فَقَالَ لَمْ أَعْنِكَ قَالَ تَسَمَّوْا بِاسْمِي وَلَا تَكَنَّوْا بِكُنْيَتِي
It is narrated from Sayyiduna Anas (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him and his family) was in Baqi‘ when a man called out: "O Abu al-Qasim!" When the Prophet (peace and blessings be upon him and his family) turned towards him, the man said: "I did not mean you." The Prophet (peace and blessings be upon him and his family) said: "Take my name, but do not take my kunya."