To be merciful to children and embrace them Sahih al-Bukhari 5996

Arabic hadith text
حَدَّثَنَا أَبُو الْوَلِيدِ، حَدَّثَنَا اللَّيْثُ، حَدَّثَنَا سَعِيدٌ الْمَقْبُرِيُّ، حَدَّثَنَا عَمْرُو بْنُ سُلَيْمٍ، حَدَّثَنَا أَبُو قَتَادَةَ، قَالَخَرَجَ عَلَيْنَا النَّبِيُّ صلى الله عليه وسلم وَأُمَامَةُ بِنْتُ أَبِي الْعَاصِ عَلَى عَاتِقِهِ، فَصَلَّى فَإِذَا رَكَعَ وَضَعَهَا، وَإِذَا رَفَعَ رَفَعَهَا‏.‏
Translation
Narrated Abu Qatada

The Prophet (ﷺ) came out towards us, while carrying Umamah, the daughter of Abi Al-As (his granddaughter) over his shoulder. He prayed, and when he wanted to bow, he put her down, and when he stood up, he lifted her up.