I asked the Prophet, ''What is the best deed?'' He replied, ''To believe in Allah and to fight for His Cause.'' I then asked, ''What is the best kind of manumission (of slaves)?'' He replied, ''The manumission of the most expensive slave and the most beloved by his master.'' I said, ''If I cannot afford to do that?'' He said, ''Help the weak or do good for a person who cannot work for himself.'' I said, ''If I cannot do that?'' He said, ''Refrain from harming others for this will be regarded as a charitable deed for your own good.''