صحیح ابن حبان
Ibn Hibban
كتاب الصلاة
Book of Prayer
فصل في قيام الليل - ذكر البيان بأن المصطفى صلى الله عليه وسلم لما حطمه السن كان يصلي صلاة الليل جالسا
Section on Night Prayer - Clarification that when the Prophet (peace be upon him) became old, he prayed night prayer sitting
1 hadith
Hadith 2632
Sayyida Aisha Siddiqa (may Allah be pleased with her) narrates: I never saw the Prophet Muhammad (peace be upon him) performing the night voluntary prayers sitting down, until when he became old, he would recite (the Qur'an) sitting down. When there remained thirty or forty verses of a surah, he would stand up and recite them, then go into bowing (ruku).