Sahih Bukhari
Sahih Bukhari Volume 003, Book 049, Hadith Number 865.
Hadith Section/Book: Sahih Bukhari Sahih Bukhari Book 49. Peacemaking
Narated By Sahl bin Abu Hathma : Abdullah bin Sahl and Muhaiyisa bin Mas'ud bin Zaid went to Khaibar when it had a peace treaty (with the Muslims).