Sahih al-Bukhari, Book 67, Hadith 183 (In-Book) ⓘ
Narrated `Aisha: Abu Bakr admonished me and poked me with his hands in the flank, and nothing stopped me from moving at that time except the position of Allah's Messenger whose head was on my thigh.
حَدَّثَنَا عَبْدُ اللَّهِ بْنُ يُوسُفَ، أَخْبَرَنَا مَالِكٌ، عَنْ عَبْدِ الرَّحْمَنِ بْنِ الْقَاسِمِ، عَنْ أَبِيهِ، عَنْ عَائِشَةَ، قَالَتْ عَاتَبَنِي أَبُو بَكْرٍ وَجَعَلَ يَطْعُنُنِي بِيَدِهِ فِي خَاصِرَتِي فَلاَ يَمْنَعُنِي مِنَ التَّحَرُّكِ إِلاَّ مَكَانُ رَسُولِ اللَّهِ صلى الله عليه وسلم وَرَأْسُهُ عَلَى فَخِذِي.
also referenced under: Hadith 5250 (DarusSalam) & Volume 7, Book 62, Hadith 177 (USC-MSA)