(16) باب جَوَازِ النَّافِلَةِ قَائِمًا وَقَاعِدًا وَفِعْلِ بَعْضِ الرَّكْعَةِ قَائِمًا وَبَعْضِهَا قَاعِدًا
A hadith like this has been narrated by Abu Yahya al-A'raj with the same chain of transmitters. (DE)
Reference (DE): Sahih Muslim 735 b (DE)
In-book reference (DE): Book 6, Hadith 146 (DE)
USC-MSA web (English) reference(deprecated numbering scheme): Book 4, Hadith 1601 (DE)