It is narrated from Hazrat Abu Huraira (may Allah be pleased with him) that once Hazrat Sa'd (may Allah be pleased with him) came before the Holy Prophet (peace and blessings be upon him). The Holy Prophet (peace and blessings be upon him) looked at him and said, "There are signs of goodness and blessing on Sa'd's face." Then he said, "Kisra has been killed. May Allah send His curse upon Kisra, who is the first person among those who destroyed the Arabs and then the people of Persia."