Messenger of Allah, our Imam is ill. He said : When he prays sitting, pray sitting.

Abu Dawud said : The chain of this tradition is not continuous (muttasil)
Sunan Abi Dawud Book 2, Hadith 217
← Previous Hadith when the prophet (ﷺ) became seriously ill, we prayed behind him while he was sitting and Abu Bakr was calling “Allah is most great “ to cause the people to hear the TAKBIR. Then he (the narrators) narrated the rest of the tradition.

Sunan Abi Dawud Book 2, Hadith 216 Next Hadith → The Messenger of Allah (ﷺ) entered upon Umm Haram. The people (in her house) brought some cooking oil dates to him. He said; Put it (dates) back in its container and return it (cooking oil) to its bag, because I am keeping fast. He then stood and led us in prayer two Rak’ahs of supererogatory prayer. Then Umm Sulaim and Umm Haram stood behind us (i.e., the men). Thabit (the narrator) said: I understand that Anas said; he (the prophet) made me stand on his right side.

Sunan Abi Dawud Book 2, Hadith 218