Dream interpretation of hazrat ibn sirin may allah have mercy on him said that if someone sees an underage slave who has become mature, it is a sign that he will be freed. and if he sees that he has freed his slave, it is a sign that he will soon leave this world. and if a slave sees that he has sold his master, it is a sign that he will be needy and sorrowful, and if a master sees that he has sold a slave, it is a sign that he will be happy.