Is it permissible for the preacher to say at the end of the second sermon: "And know that Allah has sent prayers and peace upon His Prophet of old, for He—exalted be He—said and has not ceased to be a Speaker, All-Knowing, and a Wise Commander, as a reminder and teaching for you, and out of honor and reverence for the status of His Prophet: {Indeed, Allah and His angels send blessings upon the Prophet. O you who have believed, ask [Allah to confer] blessing upon him and greet him with [due] greeting}"?

There is no error in the meaning of the phrases. The term "anciently" (qadeeman) in the phrase "Know that Allah sent His salutations and peace upon His Prophet anciently" does not refer to the ancientness of the Qur'an itself. Rather, it means that the salutations of Allah and His angels upon the Prophet, peace be upon him, preceded the salutations of all others, or preceded the existence of the Prophet himself. This is supported by the hadith: "I was with Allah in the Mother of the Book as the Seal of the Prophets, while Adam was still intertwined in his clay." The intention is that his prophethood was mentioned and known before his creation, and was inscribed in the Mother of the Book, and Allah's knowledge is ancient and eternal.