Is it permissible to greet by saying: "May God grant you the light of the Prophet this morning?"

The greeting "Peace be upon you" (Assalamualaikum) is the greeting of the prophets and their followers. Allah commanded Adam to use it as his greeting and the greeting of his offspring. As for the greeting "May Allah enlighten your morning with the lights of the Prophet," it is not authentically reported, and it is better to avoid it due to the ambiguity of its meaning.