(16) باب جَوَازِ النَّافِلَةِ قَائِمًا وَقَاعِدًا وَفِعْلِ بَعْضِ الرَّكْعَةِ قَائِمًا وَبَعْضِهَا قَاعِدًا
'A'isha reported that the Messenger of Allah (ﷺ) would pray in the night for a long time, and when he prayed standing be bowed in a standing posture, and when he prayed sitting, he bowed in a sitting posture. (PT)
Reference (PT): Sahih Muslim 730 b (PT)
In-book reference (PT): Book 6, Hadith 130 (PT)
USC-MSA web (English) reference(deprecated numbering scheme): Book 4, Hadith 1585 (PT)