King Ahasuerus granted Queen Esther the estate of Haman, the Jews' enemy, after Haman's execution, compensating Esther for the peril she faced. Mordecai was brought before the king, recognized as Esther's cousin, and was given Haman's former position and authority, with control over Haman's confiscated property. This act signified a reversal of fortunes, where the wealth of the executed Haman was transferred to Esther and Mordecai, ensuring their elevated status and safety.