I asked ‘A’ishah whether the Messenger of Allah (ﷺ) recited a whole Surah (of the Quran) in one Rak’ah of the prayer. She replied : (He recited from among) the Mufassal surahs. I asked: Did he pray (at night) sitting? She replied : (he prayed sitting) when the people made him old.
Sunan Abi Dawud Book 2, Hadith 567
← Previous Hadith The Messenger of Allah (ﷺ) used to pray standing at night for a long time, and used to pray sitting at night for a long time. When he prayed standing, he bowed standing, and when he prayed sitting, he bowed sitting.

Sunan Abi Dawud Book 2, Hadith 566 Next Hadith → I said that I should look at the prayer of the Messenger of Allah (ﷺ) how he prays. The Messenger of Allah (ﷺ) stood up and faced the qiblah (i.e. the direction of Ka'bah) and uttered the takbir (Allah is most great); then he raised his hands till he brought them in front of his ears; then he caught hold of his left hand with his right hand (i.e. folded his hands).

When he was about to bow, he raised them (his hands) in a like manner. Then he sat, stretched out his left foot (to sit on it), placed his left hand on his left thigh, and kept away the tip of his right elbow from his right thigh, joined two fingers, formed a ring, to do so. And the narrator Bishr made a ring with the thumb and the middle finger.

Sunan Abi Dawud Book 2, Hadith 568