What is the ruling on the money won by the contestant's mother in the competition, given that the contestant submitted five entries using four other names from his family to increase the chance of winning, and agreed to give them 25% of the prize money?

If a competition requires the participant to send a comment with their name, and someone sends a comment using the names of others, and one of those whose name was used wins, they are not entitled to the prize, due to not adhering to the condition, and must return the prize. As for the ruling on this type of competition: if its subject matter is beneficial, then there is no objection to it, and the prize is permissible. But if its subject matter is false or frivolous, then it is not permissible to participate in it or to take its prize.