'A'isha reported that when the Messenger of Allah ﷺ decided upon doing any act, he continued to do it, and when he slept at night or fell sick he observed twelve rak'ahs during the daytime. I am not aware of Messenger of Allah ﷺ observing prayer during the whole of the night till morning, or observing fast for a whole month continuously except that of Ramadan.  

كَانَ رَسُولُ اللَّهِ ﷺ إِذَا عَمِلَ عَمَلاً أَثْبَتَهُ وَكَانَ إِذَا نَامَ مِنَ اللَّيْلِ أَوْ مَرِضَ صَلَّى مِنَ النَّهَارِ ثِنْتَىْ عَشْرَةَ رَكْعَةً قَالَتْ وَمَا رَأَيْتُ رَسُولَ اللَّهِ ﷺ قَامَ لَيْلَةً حَتَّى الصَّبَاحِ وَمَا صَامَ شَهْرًا مُتَتَابِعًا إِلاَّ رَمَضَانَ  

[Machine] "When the Prophet ﷺ fell ill or went to sleep during the day, he used to pray twelve units (rak'ahs). She (Aisha) said, "I never saw him (the Prophet) pray all night until morning. nor complete a month of fasting, except Ramadan." She also said, "The Messenger of Allah ﷺ used to do deeds consistently."  

وَكَانَ النَّبِيُّ ﷺ إِذَا مَرِضَ أَوْ نَامَ صَلَّى بِالنَّهَارِ اثْنَتَيْ عَشْرَةَ رَكْعَةً قَالَتْ وَمَا رَأَيْتُهُ قَامَ لَيْلَةً إِلَى الصُّبْحِ وَلَا صَامَ شَهْرًا تَامًّا مُتَتَابِعًا إِلَّا رَمَضَانَ وَقَالَتْ كَانَ رَسُولُ اللهِ ﷺ يَعْمَلُ عَمَلًا يُثْبِتُهُ  

[Machine] "The Prophet Muhammad ﷺ used to establish his actions when he performed them. And when he would sleep at night or become sick, he would pray twelve rak'at during the day."  

«كَانَ رَسُولُ اللَّهِ ﷺ إِذَا عَمِلَ عَمَلًا أَثْبَتَهُ وَكَانَ إِذَا نَامَ مِنَ اللَّيْلِ أَوْ مَرِضَ صَلَّى مِنَ النَّهَارِ ثِنْتَيْ عَشْرَةَ رَكْعَةً»  

[Machine] "The Messenger of Allah ﷺ used to establish any deed that he performed." And she (Aisha) said, "Whenever he would sleep at night or fall ill during the day, he would pray twelve cycles (rak'ahs), and I never saw the Messenger of Allah ﷺ staying up the whole night until morning, nor fasting for an entire month consecutively except during Ramadan."  

«كَانَ رَسُولُ اللَّهِ ﷺ إِذَا عَمِلَ عَمَلًا أَثْبَتَهُ» وَقَالَتْ «كَانَ إِذَا نَامَ مِنَ اللَّيْلِ أَوْ مَرِضَ صَلَّى بِالنَّهَارِ ثِنْتَيْ عَشْرَةَ رَكْعَةً وَمَا رَأَيْتُ رَسُولَ اللَّهِ ﷺ قَامَ لَيْلَةً حَتَّى الصُّبْحِ وَلَا صَامَ شَهْرًا مُتَتَابِعًا إِلَّا رَمَضَانَ»