(35) Kunyas
كتاب الكُنْيَةِ
(373) Chapter: The Prophet's name and kunya, may Allah bless him and grant him peace
(373) بَابُ اسْمِ النَّبِيِّ صلى الله عليه وسلم وَكُنْيَتِهِ
Al-Adab Al-Mufrad 843 
Ibn al-Hanafiyya was heard to say, "There was an allowance made for 'Ali. He asked, 'Messenger of Allah, if I have a son after you can I name him with your name and use your kunya?' Yes,' he replied."
حَدَّثَنَا أَبُو نُعَيْمٍ، قَالَ‏:‏ حَدَّثَنَا فِطْرٌ، عَنْ مُنْذِرٍ قَالَ‏:‏ سَمِعْتُ ابْنَ الْحَنَفِيَّةِ يَقُولُ‏:‏ كَانَتْ رُخْصَةً لِعَلِيٍّ، قَالَ‏:‏ يَا رَسُولَ اللهِ، إِنْ وُلِدَ لِي بَعْدَكَ أُسَمِّيهِ بِاسْمِكَ، وَأُكَنِّيهِ بِكُنْيَتِكَ‏؟‏ قَالَ‏:‏ نَعَمْ‏.‏
Grade :  Sahih (Al-Albani) صـحـيـح  (الألباني)حكم :
Reference : Al-Adab Al-Mufrad 843
In-book reference : Book 35, Hadith 2
English translation : Book 35, Hadith 843