The Messenger of Allah ﷺ was leading the people in prayer with Umamah daughter of Zainab daughter of the Messenger of Allah ﷺ (in his lap). When he prostrated, he put her down and when he got up(after prostration) he lifted her up.  

أَنَّ رَسُولَ اللَّهِ ﷺ كَانَ يُصَلِّي وَهُوَ حَامِلٌ أُمَامَةَ بِنْتَ زَيْنَبَ بِنْتِ رَسُولِ اللَّهِ ﷺ فَإِذَا سَجَدَ وَضَعَهَا وَإِذَا قَامَ حَمَلَهَا  

We were sitting in the mosque when the Messenger of Allah ﷺ came upon us carrying Umamah daughter of Abul'As ibn ar-Rabi'. Her mother was Zaynab daughter of the Messenger of Allah ﷺ. She (Umamah) was a child and he (the Prophet) was carrying her on his shoulder. The Messenger of Allah ﷺ led (the people) in prayer while she was on his shoulder. When he bowed he put her down and took her up when he got up. He kept on doing so until he finished his prayer.  

أَنَّهُ سَمِعَ أَبَا قَتَادَةَ يَقُولُ بَيْنَا نَحْنُ فِي الْمَسْجِدِ جُلُوسٌ خَرَجَ عَلَيْنَا رَسُولُ اللَّهِ ﷺ يَحْمِلُ أُمَامَةَ بِنْتَ أَبِي الْعَاصِ بْنِ الرَّبِيعِ وَأُمُّهَا زَيْنَبُ بِنْتُ رَسُولِ اللَّهِ ﷺ وَهِيَ صَبِيَّةٌ يَحْمِلُهَا عَلَى عَاتِقِهِ فَصَلَّى رَسُولُ اللَّهِ ﷺ وَهِيَ عَلَى عَاتِقِهِ يَضَعُهَا إِذَا رَكَعَ وَيُعِيدُهَا إِذَا قَامَ حَتَّى قَضَى صَلاَتَهُ يَفْعَلُ ذَلِكَ بِهَا  

I saw the Messenger of Allah ﷺ leading the people in prayer with Umamah daughter of Abu al-As on his neck (shoulder). When he prostrated, he put her down. Abu Dawud said: The narrator Makhramah did not hear from his father except one tradition.  

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

While we were waiting for the Messenger of Allah ﷺ for the noon or afternoon prayer, and Bilal had already called him for prayer, he came upon us with Umamah daughter of Abu al-As and daughter of his daughter on his neck. The Messenger of Allah ﷺ stood at the place of prayer and we stood behind him and she(Umamah) (all this time) was in her place. He uttered the takbir and we also uttered. When the Messenger of Allah ﷺ intended to bow, he took her and put her down, and then he bowed and prostrated till he finished his prostration. He then got up and took her and returned he to her place. The Messenger of Allah ﷺ kept on doing that in every rak’ah until he finished his prayer. May peace be upon him.  

عَنْ أَبِي قَتَادَةَ صَاحِبِ رَسُولِ اللَّهِ ﷺ قَالَ بَيْنَمَا نَحْنُ نَنْتَظِرُ رَسُولَ اللَّهِ ﷺ لِلصَّلاَةِ فِي الظُّهْرِ أَوِ الْعَصْرِ وَقَدْ دَعَاهُ بِلاَلٌ لِلصَّلاَةِ إِذْ خَرَجَ إِلَيْنَا وَأُمَامَةُ بِنْتُ أَبِي الْعَاصِ بِنْتُ ابْنَتِهِ عَلَى عُنُقِهِ فَقَامَ رَسُولُ اللَّهِ ﷺ فِي مُصَلاَّهُ وَقُمْنَا خَلْفَهُ وَهِيَ فِي مَكَانِهَا الَّذِي هِيَ فِيهِ قَالَ فَكَبَّرَ فَكَبَّرْنَا قَالَ حَتَّى إِذَا أَرَادَ رَسُولُ اللَّهِ ﷺ أَنْ يَرْكَعَ أَخَذَهَا فَوَضَعَهَا ثُمَّ رَكَعَ وَسَجَدَ حَتَّى إِذَا فَرَغَ مِنْ سُجُودِهِ ثُمَّ قَامَ أَخَذَهَا فَرَدَّهَا فِي مَكَانِهَا فَمَا زَالَ رَسُولُ اللَّهِ ﷺ يَصْنَعُ بِهَا ذَلِكَ فِي كُلِّ رَكْعَةٍ حَتَّى فَرَغَ مِنْ صَلاَتِهِ  

The Prophet ﷺ said: Kill the two black things during prayer, the snake and scorpion.  

قَالَ رَسُولُ اللَّهِ ﷺ اقْتُلُوا الأَسْوَدَيْنِ فِي الصَّلاَةِ الْحَيَّةَ وَالْعَقْرَبَ  

The Messenger of Allah ﷺ was praying with his door bolted. I came and asked to have the door opened. He walked and opened the door for me. He then returned to his place for prayer. He (the narrator Urwah) mentioned that the door faced the qiblah.  

كَانَ رَسُولُ اللَّهِ ﷺ قَالَ أَحْمَدُ يُصَلِّي وَالْبَابُ عَلَيْهِ مُغْلَقٌ فَجِئْتُ فَاسْتَفْتَحْتُ قَالَ أَحْمَدُ فَمَشَى فَفَتَحَ لِي ثُمَّ رَجَعَ إِلَى مُصَلاَّهُ وَذَكَرَ أَنَّ الْبَابَ كَانَ فِي الْقِبْلَةِ