(1) باب الْوَصِيَّةِ بِالثُّلُثِ
Humaid b. Abd al-Rahman reported this hadith on the authority of three of Sa'd's sons:
Sa'd fell ill in Mecca and Allah's Apostle (ﷺ) visited him. The rest of the hadith is the same. (ID)
Reference (ID): Sahih Muslim 1628 i (ID)
In-book reference (ID): Book 25, Hadith 14 (ID)
USC-MSA web (English) reference(deprecated numbering scheme): Book 13, Hadith 3999 (ID)