Mukhtasar Bukhari

(Book: Regarding Jizyah, etc. ... Chapter: Making peace with polytheists over wealth, etc., and ceasing fighting (is permissible), and the sin is very severe for the one who does not fulfill the covenant. ... The detailed incident of the two persons named "Huwaisa and Muhaisa" has already been mentioned in the blessed hadith.) Here it is added that the Prophet (peace and blessings be upon him) said (at the time of judgment): "Either the Jews of Khaybar pay the blood money for your slain companion (Abdullah), or be prepared for battle."