(12) باب مَنْ أَعْتَقَ شِرْكًا لَهُ فِي عَبْدٍ
This hadith has been narrated through another chain of transmitters (and the words are):
" A person from among the Ansar willed away the freedom of six slaves of his at the time of his death."
Reference: Sahih Muslim 1668 b
In-book reference: Book 27, Hadith 84
USC-MSA web (English) reference(deprecated numbering scheme): Book 15, Hadith 4113