It means that the person who sees the dream is a very good person to his relatives and indicates that he will be a great support to a person who is in trouble in the near future or to his friend whom he sees in his dream.
Anyone who sees beating his old friend in a dream will face problems. Evils that come at unexpected moments make the dreamer's life difficult. According to some dream interpreters, beating an old friend in a dream indicates unfair gossip against him. The person will make his name bad by giving false information about that friend to the people around him.