Sayyida Umm Salama (may Allah be pleased with her) narrates: Near the end of his life, the Prophet Muhammad (peace be upon him) used to perform most of his prayers while sitting. The most beloved deed to him was that which a servant does regularly, even if it is little.
Hadith Referenceصحیح ابن حبان / كتاب الصلاة / 2507
Hadith Gradingفضيلة الشيخ الإمام محمد ناصر الدين الألبانيصحيح - «الروض» (1202)، «مختصر الشمائل» (238).فضيلة الشيخ العلّامة شُعيب الأرناؤوطإسناده صحيح على شرطهما.