Language:
كتاب الأدب
78
Good Manners and Form (Al-Adab)
(109)
Chapter: Whoever named by the names of the Prophets.
(109)
باب مَنْ سَمَّى بِأَسْمَاءِ الأَنْبِيَاءِ
وَقَالَ أَنَسٌ قَبَّلَ النَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ إِبْرَاهِيمَ. يَعْنِي ابْنَهُ.

Narrated Isma`il:

I asked Abi `Aufa, "Did you see Ibrahim, the son of the Prophet (ﷺ) ?" He said, "Yes, but he died in his early childhood. Had there been a Prophet after Muhammad then his son would have lived, but there is no Prophet after him."

حَدَّثَنَا ابْنُ نُمَيْرٍ، حَدَّثَنَا مُحَمَّدُ بْنُ بِشْرٍ، حَدَّثَنَا إِسْمَاعِيلُ، قُلْتُ لاِبْنِ أَبِي أَوْفَى رَأَيْتَ إِبْرَاهِيمَ ابْنَ النَّبِيِّ صلى الله عليه وسلم قَالَ مَاتَ صَغِيرًا، وَلَوْ قُضِيَ أَنْ يَكُونَ بَعْدَ مُحَمَّدٍ صلى الله عليه وسلم نَبِيٌّ عَاشَ ابْنُهُ، وَلَكِنْ لاَ نَبِيَّ بَعْدَهُ‏.‏
Reference : Sahih al-Bukhari 6194
In-book reference : Book 78, Hadith 218
USC-MSA web (English) reference : Vol. 8, Book 73, Hadith 214
  (deprecated numbering scheme)