What is the correct wording of the Hadith: "I am pleased with Allah as my Lord, with Islam as my religion, and with Muhammad as a Prophet," and is it correct to say "nabiyan (Prophet)," or "rasoolan (Messenger)," or "nabiyan wa rasoolan (Prophet and Messenger)"?

The phrase "I am pleased with Allah as my Lord, with Islam as my religion, and with Muhammad as a Messenger/Prophet" appears in noble prophetic hadiths in two categories:

The first: Affirming the meaning, where it is permissible to use either "Messenger" (rasoolan) or "Prophet" (nabiyyan), as the meaning is the same.

The second: Prescribed remembrances (adhkar) and litanies (awrad), where it is necessary to adhere to the wording found in each specific instance. In some, "Messenger" (rasoolan) is mentioned, such as when hearing the adhan (call to prayer), and in others, "Prophet" (nabiyyan), such as in the morning remembrances.

The combination of both words has never been reported in any prophetic hadith. It is preferable to adhere to the wording found in the specific narration for each remembrance.