Treat slaves fairly and justly according to how much money was owed for their freedom. Give them inheritance in proportion with what has been already paid for buying his/her own freedom.

This hadith teaches us about the importance of justice and fairness when it comes to dealing with slaves. The Prophet Muhammad taught that if a slave has paid off part of their freedom, then they should be given freedom to the extent of what they have already paid, and also receive inheritance in proportion to the amount they have already paid. This is an important lesson on justice as it shows us that even those who are not free must still be treated fairly and justly. It also teaches us about compassion as it shows us that we must take into account people's circumstances when making decisions about them.