حَدَّثَنَا وَكِيعٌ حَدَّثَنَا فِطْرٌ عَنِ الْمُنْذِرِ عَنِ ابْنِ الْحَنَفِيَّةِ قَالَ قَالَ عَلِيٌّ رَضِيَ اللَّهُ عَنْهُ يَا رَسُولَ اللَّهِ أَرَأَيْتَ إِنْ وُلِدَ لِي بَعْدَكَ وَلَدٌ أُسَمِّيهِ بِاسْمِكَ وَأُكَنِّيهِ بِكُنْيَتِكَ قَالَ نَعَمْ فَكَانَتْ رُخْصَةً مِنْ رَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ لِعَلِيٍّ
مسند امام احمد بن حنبل · Hadith 730
It was narrated that Ibn al-Hanafiyyah said: 'Ali (RA) said: O Messenger of Allah, if i have a son after you are gone, i will call him by your name and give him your kunyah. He said: "Yes." That was a concession from the Messenger of Allah (PBUH) to 'Ali.
Translated by Dr. Muhammad Muhsin Khan · Reviewed by Islamic University of Madinah · Published March 2020