I had a fistula; so I asked the prophet (ﷺ). He said: offer prayer in standing condition; if you are unable to do so, then in sitting condition: if you are then at your side(i.e, in lying condition).
Sunan Abi Dawud Book 2, Hadith 563
← Previous Hadith ‘Imran b. Hussain asked the prophet (ﷺ) about the prayer a man offers in sitting condition. He replied: his prayer in standing condition is better than his prayer in sitting condition, and his prayer in sitting condition is half the prayer he offers in standing condition, and his prayer in lying condition is half the prayer he offers in sitting condition.

Sunan Abi Dawud Book 2, Hadith 562 Next Hadith → I never saw the Messenger of Allah (ﷺ) reciting the Quraan in his prayer at night in sitting condition until he became old. Then he used to sit in it (the prayer) and recite the Quran until forty or thirty verses remained, then he stood and recited them and prostrated himself.

Sunan Abi Dawud Book 2, Hadith 564