Ahmad ibn Muhammad from Ali ibn Hadid from Murazim who said:
I asked Abu Abdillah عليه السلام, peace be upon him, about a sick person who is not able to perform the prayer. Imam عليه السلام said: “Whatever Allah سبحانه وتعالى has caused to overcome him (to faint), then Allah سبحانه وتعالى is more entitled to excuse.”
Ali Akbar al-Ghaffari
Tahdhīb al-Aḥkām fī Sharḥ al-Muqniʿah, vol. 3, p. 335