‏الأيمان : Hadeeth No:4108 Abu Huraira reported Allaah's Prophet (sallAllaahu alayhi wa sallam) as saying: In case the slave is owned by two persons, and one of them emancipates him, he will guarantee (his full freedom)....

‏الفضائل : Hadeeth No:5683 This hadith has been narrated on the authority of Abu Sa'id Khudri through another chain of transmitters....