Yahya related to me from Malik from Hisham ibn Urwa from hisfather that A'isha, the wife of the Prophet, may Allah bless him andgrant him peace, told him that she had never seen the Messenger ofAllah, may Allah bless him and grant him peace, doing night prayerssitting down until he was getting on in years. He would recite sittingdown until when he wanted to go into ruku, he would stand up andrecite about thirty or forty ayats and then go into ruku.
App reference: Book 8, Hadith 23
USC-MSA web (English) reference: Book 8, Hadith 23
Arabic reference: Book 8, Hadith 312