question #1 Sahih Muslim 543b, Book 5, Hadith 53 : What does this narration teach about the permissibility of carrying a child during prayer?

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.