What are the details of the letter sent by the Messenger of Allah, may Allah bless him and grant him peace, to the King of the Copts, inviting him to Islam?

The Prophet Muhammad, may Allah's prayers and peace be upon him, sent a message to Al-Muqawqis, the great ruler of the Copts, inviting him to Islam, citing the noble verse: "O People of the Scripture, come to a word that is equitable between us and you." Hatib ibn Abi Balta'ah carried the message, and he debated with Al-Muqawqis, explaining the greatness of the Prophet Muhammad's message. Al-Muqawqis showed interest in the message and praised its contents, but he did not embrace Islam. Instead, he sent gifts to the Prophet, including two slave girls (Maria and Sirin) and a mule (Duldul). The Prophet commented on this, saying: "The wicked one was stingy with his dominion, and his dominion shall not last."