Earning wealth through lawful means and spending it on lawful means is what Islam lays stress on. It is, however, preferable that one should help the needy and spend one's earnings for charitable purposes. The first who deserve charity are one's near and dear ones, then neighbours, then orphans, then the needy and so on. Earning wealth by deception, fraud, usury, oppression, threat etc is unlawful and HARAAM in Islam. Islam is against the accumulation of wealth in a few hands.
Answer
He was the last Prophet of Islam. He was commanded by Almighty Allah Karim to preach in public.
the main preaches of prophet Muhammad is collected as Koran (Quran).
if he'd want u to preach, you'd be his prophet, unfortunately, Prophet Muhammad (PBUH) was the last prophets and there are no more prophets after him..
he was a prophet and a messenger. his duty was to bring in new followers and preach the teachings of allah
Hegira started in 622 AD and when Muhammad had to move from Mecca to Medina to preach Islam.
He preached that life should be enjoyed and cherished and not destroyed by school and work.
Muhammad preached that all people are equal and that the rich should share their wealth with the poor . Many poor people began accepting Muhammad's message and became Muslims, or followers of Islam.
He encouraged everyone to share their wealth.
If you are asking about the prophet Muhammad, he began his preaching in year 610 AD, in Mecca (or Makkah) which is currently in Saudi Arabia.
Hazrat Muhammad SAW was born in Mecca. He started preaching Islam at the age of 40. The non-believers of Mecca turned against him. They made it very difficult for him and his fllowers to live in Mecca. He had to migrate to Madina to preach Islam over there.
Islam is the continuation of Judaism and Christianity. Hazrat Muhammad (SAW) is the last prophet of Islam. Like all the heavenly religions, Islam believes in ONENESS of Almighty Allah (God). Hazrat Muhammad (SAW) was ordained by Almighty Allah through Arch Angel Gabriel to preach the beliefs of Islam.