[Machine] Narrated from Witr, the Messenger of Allah ﷺ said, "We used to prepare his purification and toothbrush for him, then Allah would send him to what He wanted to send him in the night. So, he would cleanse himself and perform ablution and then pray nine rak'ahs, in which he would not sit except during the eighth one, where he would praise his Lord and supplicate to Him and remember Him. Then he would rise without giving salaam and perform the ninth rak'ah, in which he would sit and praise his Lord, supplicate, and remember Him. Then he would give salaam audibly for us to hear. After that, he would perform two rak'ahs while sitting, after giving salaam in a state of sitting. Those are the eleven rak'ahs, O my son."  

عَنْ وِتْرِ رَسُولِ اللهِ ﷺ قَالَتْ كُنَا نُعِدُّ لَهُ طَهُورَهُ وَسِوَاكَهُ فَيَبْعَثُهُ اللهُ لِمَا شَاءَ أَنْ يَبْعَثَهُ مِنَ اللَّيْلِ «فَيَتَسَوَّكُ وَيَتَوَضَّأُ ثُمَّ يُصَلِّي تِسْعَ رَكَعَاتٍ لَا يَجْلِسُ فِيهِنَّ إِلَّا عِنْدَ الثَّامِنَةِ فَيَحْمَدُ رَبَّهُ وَيَدْعُو وَيَذْكُرُهُ ثُمَّ يَنْهَضُ وَلَا يُسَلِّمُ وَيُصَلِّي التَّاسِعَةَ فَيَجْلِسُ فَيَذْكُرُ رَبَّهُ وَيَحْمَدُهُ وَيَدْعُو ثُمَّ يُسَلِّمُ تَسْلِيمًا يُسْمِعُنَا ثُمَّ يُصَلِّي رَكْعَتَيْنِ وَهُوَ قَاعِدٌ بَعْدَمَا يُسَلِّمُ فَتِلْكَ إِحْدَى عَشْرَةَ رَكْعَةً يَا بُنَيَّ»  

[Machine] That the Prophet ﷺ used to perform nine units of voluntary prayer, sitting in the eighth unit, then he would stand and perform one more unit of prayer. Hisham ibn Hassan disagreed with him.  

أَنَّ النَّبِيَّ ﷺ كَانَ «يُوتِرُ بِتِسْعِ رَكَعَاتٍ يَقْعُدُ فِي الثَّامِنَةِ ثُمَّ يَقُومُ فَيَرْكَعُ رَكْعَةً» خَالَفَهُ هِشَامُ بْنُ حَسَّانٍ  

" I came to Al-Madinah and entered upon Aishah, may Allah (SWT) be pleased with her. She said: 'Who are you?' I said: 'I am Sa'd bin Hisham bin 'Amir.' She said: 'May Allah have mercy on your father.' I said: 'Tell me about the prayer of the Messenger of Allah ﷺ.' She said: 'The Messenger of Allah ﷺ did such and such.' I said: 'Yes indeed.' She said: 'The Messenger of Allah ﷺ used to pray Isha' at night, then he would go to his bed and sleep. In the middle of the night, he would get up to relieve himself and go to his water for purification and perform wudu. Then he went into the Masjid and prayed eight rak'ahs. I think he made the recitation, bowing and prostration equal in length. Then he prayed one rak'ah of witr, then he prayed two rak'ahs sitting down. Then he lay down on his side. Sometimes Bilal would come and tell him that it was time to pray before he napped, and sometimes he napped. And sometimes I was not sure if he had napped or not before he told him that it was time to pray. This is how the Messenger of Allah ﷺ used to pray until he grew older and gained weight"- and she mentioned whatever Allah (SWT) willed about his gaining weight. She said: "And the Prophet ﷺ used to lead the people in praying witr, then he would go to his bed. In the middle of the night, he would get up and go to water for purification, and to relieve himself, then he would perform wudu. Then he would go into the masjid and pray six rak'ahs, and I think he made the recitation, bowing, and prostration equal in length. Then he prayed one rak'ah of witr, then he prayed two rak'ahs sitting down. Then he lay down on his side. Sometimes Bilal would come and tell him that it was time to pray before he napped, and sometimes he napped. And sometimes I was not sure if he had napped or not before he told him that it was time to pray." She said: "And this is how the Messenger of Allah ﷺ continued to pray." (Using translation from Nasāʾī 1651)   

عَنْ صَلَاةِ رَسُولِ اللهِ ﷺ قَالَتْ إِنَّ رَسُولَ اللهِ ﷺ كَانَ يُصَلِّي بِاللَّيْلِ صَلَاةَ الْعِشَاءِ ثُمَّ يَأْوِي إِلَى فِرَاشِهِ فَيَنَامُ فَإِذَا كَانَ جَوْفُ اللَّيْلِ قَامَ إِلَى حَاجَتِهِ وَإِلَى طَهُورِهِ فَتَوَضَّأَ ثُمَّ دَخَلَ الْمَسْجِدَ فَيُصَلِّي ثَمَانِي رَكَعَاتٍ يُخَيَّلُ إِلَيَّ أَنَّهُ يُسَوِّي بَيْنَهُنَّ فِي الْقِرَاءَةِ وَالرُّكُوعِ وَالسُّجُودِ وَيُوتِرُ بِرَكْعَةٍ ثُمَّ يُصَلِّي رَكْعَتَيْنِ وَهُوَ جَالِسٌ ثُمَّ يَضَعُ جَنْبَهُ فَرُبَّمَا جَاءَ بِلَالٌ فَآذَنَهُ بِالصَّلَاةِ قَبْلَ أَنْ يُغْفِيَ وَرُبَّمَا أَغْفَى وَرُبَّمَا شَكَكْتُ أَغَفَى أَمْ لَا؟ حَتَّى يُؤْذِنَهُ بِالصَّلَاةِ فَكَانَتْ تِلْكَ صَلَاةَ رَسُولِ اللهِ ﷺ حَتَّى أَسَنَّ وَلَحِمَ قَالَتْ وَكَانَ يُصَلِّي بِالنَّاسِ الْعِشَاءَ ثُمَّ يَأْوِي إِلَى فِرَاشِهِ فَإِذَا كَانَ جَوْفُ اللَّيْلِ قَامَ إِلَى طَهُورِهِ وَإِلَى حَاجَتِهِ فَتَوَضَّأَ ثُمُّ دَخَلَ الْمَسْجِدَ فَصَلَّى سِتَّ رَكَعَاتٍ يُخَيَّلُ إِلَيَّ أَنَّهُ يُسَوِّي بَيْنَهُنَّ فِي الْقِرَاءَةِ وَالرُّكُوعِ وَالسُّجُودِ ثُمَّ يُوتِرُ بِرَكْعَةٍ ثُمَّ يُصَلِّي رَكْعَتَيْنِ وَهُوَ جَالِسٌ ثُمَّ يَضَعُ جَنْبَهُ وَرُبَّمَا جَاءَهُ بِلَالٌ فَآذَنَهُ بِالصَّلَاةِ قَبْلَ أَنْ يُغْفِي وَرُبَّمَا أَغْفَى وَرُبَّمَا شَكَكْتُ أَغْفَى أَمْ لَا؟ حَتَّى يُؤْذِنَهُ بِالصَّلَاةِ قَالَتْ فَمَا زَالَتْ تِلْكَ صَلَاةَ رَسُولِ اللهِ ﷺ