Why we need to know 'Sirah Nabawiyah' (Muhammad's history)? At least there are 5 main reasons:
1) It is a history of one great man, chosen by God, to be the last prophet, with scientific verification method ('shahih' / the writer had to be known/tested, who said who).
2) Every phase of Muhammad's life is very clear. Like some of non muslim writer said, "It is the only well-known man whom 'born under the sunshine' ". We knew what happened in year after year in Muhammad's life. Even some Muhammad's friends (shahabah) described how many white hair in his head and beard. This doesn't happen with another world-religious figure.
3) Sirah Nabawiyah told us history of the last prophet. Muhammad is a very special man chosen by God and scripture was revealed to him (he can not write or read), but God didn't expel Muhammad from his humanity. His life story doesn't included tales or being engaged with divinity, not at all. He is a special man, a messenger, but he is a human like all of us.
4) Sirah Nabawiyah covered every stage and every human's perspective which every man has. Muhammad's history told his life journey as a young man 'the trustworthy' - with good character (before angel Gabriel came to him), as a messenger, a husband, a father, a hero, a politician, a country leader, an educator and a 'living guide' for people surround him.
5) Sirah Nabawiyah gave undoubtful facts about Muhammad as prophet. Whoever did a research about him in details, will know unbalance power and quantity between his army and his enemy (God had helped him with angels army) in every battle he won. The researcher will know the time is too short in giving people of the world the God's guidance (until he died it was 25 years). Muhammad gave da'wa with a good way; he did da'wa (explained Islam), then being hurted, then continued to give the messages (Qur'an), got followers and so on. If he was forced to fight, then he fought back. He's also treated prisoners from the war very well. That's how Islam spreadt, with good words, gaining faith, not with sword or violence.
However, the biggest miracle from Muhammad is Qur'an itself. A lot of scientific proofs that was founded in this century, already being revealed in Qur'an 1400 years ago. Another miracles from Muhammad are speaking with wolves, date palm tree, small bread was enough for a lot of people, water came out from his finger, etc. But still, the biggest miracle is Qur'an, the God's words. May peace and Allah's blessing be upon him, our beloved prophet, Muhammad (pbuh).
