(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. (IT)
Reference (IT): Sahih Muslim 735 b (IT)
In-book reference (IT): Book 6, Hadith 146 (IT)
USC-MSA web (English) reference(deprecated numbering scheme): Book 4, Hadith 1601 (IT)