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he started preaching Islam from his own FAMILY
Prophet Mohammed The last Prophet of Islam Hazrat MUhammad (SAW) was born in Mecca, in Arabian Peninsula, in 670 AD. He started preaching Islam in 610 AD.
Muslims
All the prophets sent by Almighty God for the guidance of humans preached one and the same religion - Islam. Its basic beliefs being: ONENESS of Almighty God. Belief in Angels, Prophets, Day of Judgement, Life Hereafter etc. The last Prophet of Islam was Hazrat Muhammad Mustafa (May peace be upon him). He started preaching Islam in 570 AD when he was about 40 years of age. He started preaching Islam at Makka, Saudi Arabia.
In Arabia, in 610 when the last Prophet of Islam Hazrat Muhammad Mustafa (SAW) started preaching Islam to the people.
The last holy Prophet Hazrat Muhammad (May peace and blessings of Allah Karim be upon him) was born in Makka (Mecca) in Saudi Arabia. He started preaching Islam at the age of forty in Makka.
He was in Medina preaching the word of Islam.
All the Prophets preached Islam. Hazrat Adam (AS) was the first Prophet of Islam. The last Prophet of Islam was Hazrat Muhammad (SAW) who started preaching Islam in570 AD, in Kakka, Arabia.
I would recommend u DR. Zakir Naik. he is a wonderful scholar of Islam He knows the tiniest detail of every religion and that's why he is able to answer all the questions about Islam so nicely. he knows every verse of the Holy Quran and because of his effective preaching many have turned Muslims.
Invite to the way of your Lord with wisdom and fair preaching , and argue with them in a way that is bestAl-Quran 16:125
Hazrat Muhammad (SAW) was the last Prophet of Islam. There have been about 1, 25, 000 Prophets (May peace be upon them all) who had been preaching Islam.
Islam born early 600s and the Prophet Muhammad start having vision at 610