Manumission of Slaves 
Bukhari :: Book 3 :: Volume 46 :: Hadith 726
Narrated 'Abdullah:
The Prophet said, "If a slave serves his Saiyid (i.e. master) sincerely and worships his Lord (Allah) perfectly, he will get a double reward."
Manumission of Slaves
Bukhari :: Book 3 :: Volume 46 :: Hadith 726
Narrated 'Abdullah:
The Prophet said, "If a slave serves his Saiyid (i.e. master) sincerely and worships his Lord (Allah) perfectly, he will get a double reward."