Next, open page 16 of the book of Fathul Qorib about the number of cycles of prayer.
فَصْل
This chapter explains the number of cycles of prayer.
وَرَكَعَاتُ الْفَرَائِضِ
As for the number of rakats for the fardlu prayer, that is, one day and one night in prayer at home except on Fridays
سَبْعَةَ عَشَرَ رَكْعَةً
is seventeen rak'ahs. As for Friday, the number of cycles of fardlu prayer on that day is fifteen cycles. The number of rakats praying every day while traveling for people who pray qashar is eleven cycles.
فيها أربع وثلاثون سجدة وأربع وتسعون تكبيرة وتسع تشهدات وعشر تسليمات ومائة وثلاث وخمسون تسبيحة وجملة الأركان في الصلاة مائة وستة وعشرون ركنا في الصبح ثلاثون ركنا وفي المغرب اثنان وأربعون ركنا وفي الرباعية أربعة وخمسون ركنا
The words mushannif "in the number of rakats there are thirty-four prostrations, ninety-four takbir, nine tasyahud, ten greetings, and one hundred and fifty three tasbih. The number of pillars in prayer is one hundred and twenty six, namely thirty in the Fajr prayer, forty-two in the Maghrib prayer, and fifty-four in the four rak'ahs prayer "until the end of his words are clear and not needs to be explained.
وَمَنْ عَجَزَ عَنِ الْقِيَامِ فِي الْفَرِيْضَةِ
And whoever is unable to stand up while praying fardlu because there is something heavy he experiences while standing up,
صَلَّى جَالِسًا
then he is allowed to pray by sitting in the position he wants. However, iftirasy sitting in a standing position is more important than sitting tarabbu '(cross-legged) according to al Adhhar's opinion.
وَمَنْ عَجَزَ عَنِ الْجُلُوْسِ صَلَّى مُضْطَجِعًا
And whoever is unable to sit, is allowed to pray while sleeping on his side. If you are unable to sleep on your side, then pray on your back and your legs facing the Qibla.
If he is unable to do all that, then he should give rest with the eye and the intention in his heart. And it is obligatory for him to face the Qibla with his face by placing something under his head and giving rest with the head during bowing and prostration.
If he is unable to give isyarah with his head, then he should give it with a wink. If he is not able to give isyarah with it, then he must carry out the pillars of prayer in his heart. And it is not allowed to leave prayer as long as the intellect is still there.
A person who prays in a sitting position, then he is not obliged to make up 'and the reward is not reduced, because in fact he is a person who has udzur.
As for the words of the Prophet sallallaahu alaihi wa sallam,
مَنْ صَلَّى قَاعِدًا فَلَهُ نِصْفُ أَجْرِ الْقَائِمِ وَمَنْ صَلَّى نَائِمًا فَلَهُ نِصْفُ أَجْرِ الْقَاعِ
"Whoever prays in a sitting position, then he gets half the reward of people who pray standing up. And whoever performs prayers by sleeping, then he gets half the reward of people who pray by sitting down. "
So it is directed at the person who is praying the sunnah and he is in a state of being able. Next read about the work left behind in prayer.