Language:
كتاب المناقب
61  
Virtues and Merits of the Prophet (pbuh) and his Companions
(23)
Chapter: The description of the Prophet (saws)
(23)
باب صِفَةِ النَّبِيِّ صلى الله عليه وسلم
Sahih al-Bukhari 3555

Narrated `Aisha:

That Allah's Messenger (ﷺ) came to her in a happy mood with his features glittering with joy, and said, "Have you not heard what the Qaif has said about Zaid and Us-ama? He saw their feet and remarked. These belong to each other." (i.e. They are father and son.)

حَدَّثَنَا يَحْيَى، حَدَّثَنَا عَبْدُ الرَّزَّاقِ، حَدَّثَنَا ابْنُ جُرَيْجٍ، قَالَ أَخْبَرَنِي ابْنُ شِهَابٍ، عَنْ عُرْوَةَ، عَنْ عَائِشَةَ ـ رضى الله عنها ـ أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم دَخَلَ عَلَيْهَا مَسْرُورًا تَبْرُقُ أَسَارِيرُ وَجْهِهِ، فَقَالَ ‏ "‏ أَلَمْ تَسْمَعِي مَا قَالَ الْمُدْلِجِيُّ لِزَيْدٍ وَأُسَامَةَ ـ وَرَأَى أَقْدَامَهُمَا ـ إِنَّ بَعْضَ هَذِهِ الأَقْدَامِ مِنْ بَعْضٍ ‏"‏‏.‏
Reference : Sahih al-Bukhari 3555
In-book reference : Book 61, Hadith 64
USC-MSA web (English) reference : Vol. 4, Book 56, Hadith 755
  (deprecated numbering scheme)