#لماذا_لا_يحتاج_العالم_الي_نبي_بعد_محمد_صلى_الله_عليه_وسلم

Prophet Mohammed ,may God bless him and grant him peace, did passed away but Allah (Almighty God ) has left us the Qur’an and the Sunnah of His Messenger, so that we may return to them when needed, and he has instructed us to learn and teach them to those after us. 
"Indeed, it is We who sent down the Qur'an and indeed, We will be its guardian." [Al-Hijr: 9]. 

Praise be to Allah, we still have Quran and Sunnah in our hands and the contents of his message are still known to scholars in the Shari’a law.

"Say, "This is my way; I invite to Allah with insight, I and those who follow me." [Yusuf: 108]. 

The Prophet peace and blessings be upon him  said, "Convey (my teachings) to the people even if it were a single sentence"
So learning this message and adhering to it is an infallibility for us from misguidance. 
Messenger of Allah, may Allah bless him and grant him peace, said, "I have left two matters with you. As long as you hold to them, you will not go the wrong way. They are the Book of Allah and the Sunna of His Prophet."

#لماذا_لا_يوجد_نبى_بعد_محمد صلى الله عليه وسلم

Why should Muhammad be the Final Prophet?Haven't there been others after him?

Prophethood is not something acquired by a person who proves himself worthy, nor is it granted in recognition of piety.Prophethood is an office to which God appoints a man in order to fill a particular need.The Qur'an mentions four conditions under which prophets were sent to the world:

1.When no prophet had ever been sent to a people before and no divine message had reached them .

2.When the message of an earlier prophet had been forgotten by thepeople or the teachings of former prophets had been altered with time .

3.When a second prophet was needed to assist a first one .

4.When a people had not yet received complete instruction from God In each of these cases a prophet was appointed to convey divinerevelation, updating previous messages and correcting deviations that man had introduced into the religion of God.After God's message was completed through revelation to Muhammad and its preservation guaranteed, there was no further need for messengers to convey revelation;only for teachers and reformers to remind people of what God had revealed.

[The Qur'an states: “Muhammad is not the father of [any] one of your men, but [he is] the Messenger of Allah and seal [ie, last] of the prophets.” (33:40)]

From the time of Muhammad's prophethood, conditions in the world have been conducive to the transmission of God's message to all civilizations, making the appointment of additional prophets unnecessary.

This final message has undergone no amendment or alteration by man;not a single word has been added to it or deleted from it.
If God intended to send another prophet after Muhammad, He would have made that fact clear in the Qur'an or commanded His Messenger to declare that a prophet would follow him.But the Qur'an clearly affirms that God has now completed His divine mission through Prophet Muhammad.[

 God stated therein: “This day I have perfected for you your religion and completed My favour upon you and have approved for you Islam as religion.”(5:3)]

Therefore, the office of prophethood has been cancelled, enabling the world to unite in allegiance to the final prophet and obedience to God.

For everyone who accepts Muhammad as the divinely appointed final messenger will seek instruction only within the message he conveyed.