Messenger of Allah ﷺ was praying and he was carrying Umama the daughters of Zainab, the daughter of Messenger of Allah ﷺ and she was the daughter of 'As bin Rabiʿa bin ʿAbd Shams. When he prostrated, he put her down and when he stood, he carried her (on his neck).  

أَنَّ رَسُولَ اللَّهِ ﷺ كَانَ يُصَلِّي وَهْوَ حَامِلٌ أُمَامَةَ بِنْتَ زَيْنَبَ بِنْتِ رَسُولِ اللَّهِ ﷺ وَلأَبِي الْعَاصِ بْنِ رَبِيعَةَ بْنِ عَبْدِ شَمْسٍ فَإِذَا سَجَدَ وَضَعَهَا وَإِذَا قَامَ حَمَلَهَا