What was the last saying uttered by the Messenger, may Allah bless him and grant him peace, before his death?

The last words uttered by the Prophet, peace and blessings be upon him, before his passing were: "O Allah, the Exalted Companion," as reported by Bukhari and Muslim from Aisha, may Allah be pleased with her. The Prophet, while healthy, used to say: "No prophet is taken until he is shown his place in Paradise, then he is given the choice." As for other narrations that mention وصايا (admonitions/final instructions) such as "Expel the Jews of Hijaz..." and "Prayer, prayer, and fear Allah concerning what your right hands possess," these were among the last general admonitions spoken by the Prophet, peace and blessings be upon him. However, "O Allah, the Exalted Companion" was absolutely the last word he uttered.