Language:
كتاب الأدب
78  
Good Manners and Form (Al-Adab)
(81)
Chapter: To be cheerful with the people
(81)
باب الاِنْبِسَاطِ إِلَى النَّاسِ
Sahih al-Bukhari 6130

Narrated `Aisha:

I used to play with the dolls in the presence of the Prophet, and my girl friends also used to play with me. When Allah's Messenger (ﷺ) used to enter (my dwelling place) they used to hide themselves, but the Prophet would call them to join and play with me. (The playing with the dolls and similar images is forbidden, but it was allowed for `Aisha at that time, as she was a little girl, not yet reached the age of puberty.) (Fath-ul-Bari page 143, Vol.13)

حَدَّثَنَا مُحَمَّدٌ، أَخْبَرَنَا أَبُو مُعَاوِيَةَ، حَدَّثَنَا هِشَامٌ، عَنْ أَبِيهِ، عَنْ عَائِشَةَ ـ رضى الله عنها ـ قَالَتْ كُنْتُ أَلْعَبُ بِالْبَنَاتِ عِنْدَ النَّبِيِّ صلى الله عليه وسلم وَكَانَ لِي صَوَاحِبُ يَلْعَبْنَ مَعِي، فَكَانَ رَسُولُ اللَّهِ صلى الله عليه وسلم إِذَا دَخَلَ يَتَقَمَّعْنَ مِنْهُ، فَيُسَرِّبُهُنَّ إِلَىَّ فَيَلْعَبْنَ مَعِي‏.‏
Reference : Sahih al-Bukhari 6130
In-book reference : Book 78, Hadith 157
USC-MSA web (English) reference : Vol. 8, Book 73, Hadith 151
  (deprecated numbering scheme)