As a matter of fact, the ascension of the Prophet of Muhammad (peace be upon him and his progeny) completes the divine blessings and is the beginning of divine mercy. There is a Hadith from Imam of the time, Hazrat Mahdi (may Allah hasten his reappearance) that says: Allah Almighty sent down the prophet Muhammad so that he be a mercy for the people of the universe and ends his blessing via his ascension.
source : erfan.ir
