“The Prophet (ﷺ) used to recite Qur’an sitting down, then when he wanted to bow he would stand up for as long as it takes a person to recite forty Verses.”
Sunan Ibn Majah Book 5, Hadith 424
← Previous Hadith ‘By the One Who took his soul (i.e., the soul of the Prophet (ﷺ)), he did not die until he offered most of his prayers sitting down. And the dearest of the actions to him was the righteous action that the person does regularly, even if it were a little.”

Sunan Ibn Majah Book 5, Hadith 423 Next Hadith → “I did not see the Messenger of Allah (ﷺ) offer any of the night prayers in any way other than standing, until he became old. Then he started to pray sitting down until, when there were thirty or forty Verses left of his recitation, he would stand up and recite them, and prostrate.”

Sunan Ibn Majah Book 5, Hadith 425