Narrated 'Aishah: Between the time when the Messenger of Allah (ﷺ) finished the night prayer till the dawn broke, he used to pray eleven rak'ahs, uttering the salutation at the end of every two and observing the witr with a single one, and during that he would make a prostration about as long a one of you would take to recite fifty verses before raising his head. When the mu'adhdhin finished making the call for the dawn prayer, he stood up and prayed two short rak'ahs, then he lay down on his right side till the mu'adhdhin came to him

Narrated 'Aishah: Between the time when the Messenger of Allah (ﷺ) finished the night prayer till the dawn broke, he used to pray eleven rak'ahs, uttering the salutation at the end of every two and observing the witr with a single one, and during that he would make a prostration about as long a one of you would take to recite fifty verses before raising his head. When the mu'adhdhin finished making the call for the dawn prayer, he stood up and prayed two short rak'ahs, then he lay down on his right side till the mu'adhdhin came to him

حَدَّثَنَا عَبْدُ الرَّحْمَنِ بْنُ إِبْرَاهِيمَ، وَنَصْرُ بْنُ عَاصِمٍ، - وَهَذَا لَفْظُهُ - قَالاَ حَدَّثَنَا الْوَلِيدُ، حَدَّثَنَا الأَوْزَاعِيُّ، - وَقَالَ نَصْرٌ ‏:‏ عَنِ ابْنِ أَبِي ذِئْبٍ، وَالأَوْزَاعِيِّ، - عَنِ الزُّهْرِيِّ، عَنْ عُرْوَةَ، عَنْ عَائِشَةَ، - رضى الله عنها - قَالَتْ ‏:‏ كَانَ رَسُولُ اللَّهِ صلى الله عليه وسلم يُصَلِّي فِيمَا بَيْنَ أَنْ يَفْرُغَ مِنْ صَلاَةِ الْعِشَاءِ إِلَى أَنْ يَنْصَدِعَ الْفَجْرُ إِحْدَى عَشْرَةَ رَكْعَةً، يُسَلِّمُ مِنْ كُلِّ ثِنْتَيْنِ وَيُوتِرُ بِوَاحِدَةٍ، وَيَمْكُثُ فِي سُجُودِهِ قَدْرَ مَا يَقْرَأُ أَحَدُكُمْ خَمْسِينَ آيَةً قَبْلَ أَنْ يَرْفَعَ رَأْسَهُ، فَإِذَا سَكَتَ الْمُؤَذِّنُ بِالأُولَى مِنْ صَلاَةِ الْفَجْرِ قَامَ فَرَكَعَ رَكْعَتَيْنِ خَفِيفَتَيْنِ، ثُمَّ اضْطَجَعَ عَلَى شِقِّهِ الأَيْمَنِ حَتَّى يَأْتِيَهُ الْمُؤَذِّنُ ‏.‏