When Allah made Muhammad (S.A.W.) Prophet, He designated him as the "Last Prophet". For this reason, from the very beginning of his mission! the Prophet of Allah told the people that he was the "last of the prophets", and that no prophet would come after him
Those who believed in Muhammad (S.A.W.) and became Muslims in the early days of Islam, all recognized him to be the last of Allah's prophets. The Qur'an, the Word of Allah and the permanent miracle of our Prophet, also calls Muhammad (S.A.W.) the last of the prophets", where it tells us:
Muhammad (S.A.W.) is the Prophet of Allah, and the last of the prophets"
Therefore, we Muslims who recognize the Qur'an as the Book of Allah, understand that Muhammad (S.A.W.) is the last of Allah's messengers and have no doubts about it. The principles and instructions of Islam are so complete that through it all lovers of truth in all ages and in all places are able to reach their perfection and prosperity. Allah is aware of the needs of all people, in all ages, and He has designed Islam's programs of perfection in such a way that it is able to meet all of humanity's needs.
Therefore, whatever progress people make in knowledge and science still they are in need of the Qur'an for it is the Word of Allah and the Book of His guidance. In this, there is no difference between Allah's guidance and His other blessings like water, air, sunlight, and so on. Islam's programs of perfection are in the Qur'an. The Quran is the last of the heavenly books and the permanent Book of Islam that, through the efforts of self-sacrificing Muslims has been preserved through the ages. It is the best, most comprehensive program of human perfection. Allah has told us that Islam is the last religion and that our Prophet (S.A.W.) is the last of His messengers. We Muslims by following the leaders who clarify the Qur'an for us live in eternal bliss in this world and in the Hereafter.