I saw the Messenger of Allah ﷺ saying the prayer while he was carrying Umama, daughter of Zainab, daughter of the Messenger of Allah ﷺ. and Abu'l-'As b. al-Rabi'. When he stood up, he took her up and when he prostrated he put her down, Yahya said: Malik replied in the affirmative.  

أَنَّ رَسُولَ اللَّهِ ﷺ كَانَ يُصَلِّي وَهُوَ حَامِلٌ أُمَامَةَ بِنْتَ زَيْنَبَ بِنْتِ رَسُولِ اللَّهِ ﷺ وَلأَبِي الْعَاصِ بْنِ الرَّبِيعِ فَإِذَا قَامَ حَمَلَهَا وَإِذَا سَجَدَ وَضَعَهَا قَالَ يَحْيَى قَالَ مَالِكٌ نَعَمْ  

I saw the Apostle ﷺ leading the people in prayer with Umima, daughter of Abu'l-'As and Zainab, daughter of the Messenger of Allah ﷺ, on his shoulder. When he bowed, he put her down, and when he got up after prostration, he lifted her again.  

رَأَيْتُ النَّبِيَّ ﷺ يَؤُمُّ النَّاسَ وَأُمَامَةُ بِنْتُ أَبِي الْعَاصِ وَهْىَ ابْنَةُ زَيْنَبَ بِنْتِ النَّبِيِّ ﷺ عَلَى عَاتِقِهِ فَإِذَا رَكَعَ وَضَعَهَا وَإِذَا رَفَعَ مِنَ السُّجُودِ أَعَادَهَا  

I saw the Messenger of Allah ﷺ leading the people in prayer with Umama daughter of Abu'l-'As on his neck; and when he prostrated he put her down.  

سَمِعْتُ أَبَا قَتَادَةَ الأَنْصَارِيَّ يَقُولُ رَأَيْتُ رَسُولَ اللَّهِ ﷺ يُصَلِّي لِلنَّاسِ وَأُمَامَةُ بِنْتُ أَبِي الْعَاصِ عَلَى عُنُقِهِ فَإِذَا سَجَدَ وَضَعَهَا  

As we were sitting in the mosque, the Messenger of Allah ﷺ came to us, and the rest of the hadith is the same except that he made no mention that he led people in this prayer.  

سَمِعَ أَبَا قَتَادَةَ يَقُولُ بَيْنَا نَحْنُ فِي الْمَسْجِدِ جُلُوسٌ خَرَجَ عَلَيْنَا رَسُولُ اللَّهِ ﷺ بِنَحْوِ حَدِيثِهِمْ غَيْرَ أَنَّهُ لَمْ يَذْكُرْ أَنَّهُ أَمَّ النَّاسَ فِي تِلْكَ الصَّلاَةِ