(16) باب جَوَازِ النَّافِلَةِ قَائِمًا وَقَاعِدًا وَفِعْلِ بَعْضِ الرَّكْعَةِ قَائِمًا وَبَعْضِهَا قَاعِدًا
Zuhri reported this hadith with the same chain of transmitters, except this that he made a mention of one year or two years. (ID)
Reference (ID): Sahih Muslim 733 b (ID)
In-book reference (ID): Book 6, Hadith 143 (ID)
USC-MSA web (English) reference(deprecated numbering scheme): Book 4, Hadith 1598 (ID)