Chapter on the Manner of Prayer, Explanation of the Fifty-One Rak‘ahs; The Order, Recitation, Tasbih in Bowing and Prostration, Qunut, and What is Obligatory and Recommended Therein

And from him, from Ali ibn Ibrahim from Muhammad ibn Isa from Yunus ibn Abd al-Rahman from Abdullah ibn Sinan: Abu Abdillah عليه السلام said: “It is permissible for a sick person to recite only Surah al-Fatiha in the obligatory prayer, and it is also permissible for a healthy person when making up voluntary prayers, whether at night or during the day.”