The Prophet (peace and blessings of Allah be upon him) and his companions (peace be upon them all) stayed in Makkah for another ten years inviting people to Islam but they remained hostile. The future looked bleak but the Muslims never gave up. Then the opportunity came for the message of Islam to spread in a place called Yathrib which was later called Madinah. For the honored task of being the first ambassador of Islam, Mus`ab was chosen, above older people and those who were closely related to the Prophet himself (peace be upon him). Why was this young man chosen? He was chosen for his noble pious character, fine manners, and sharp intelligence. He was also able to recite the Qur’an beautifully and movingly and he had a lot of knowledge of Islam. He was perfect for the job.
Mus`ab (may Allah be pleased with him) knew this was a very sacred mission he was being called to do. He knew that he was inviting people to Allah and His prophet (peace be upon him) and that this city would be the base for the young and struggling Muslim community. Once in Madinah,
he used to go to the people in their houses and gatherings and speak to them about Islam reciting the Qur’an to them.
Many people accepted Islam. Although this pleased Mus`ab, it greatly displeased the leaders of Madinah.
The first ambassador of the Prophet (peace be upon him) was extremely successful.
One time when Mus`ab was sitting with a group of people under a tree, one of the notables of Madinah approached, brandishing a spear. Mus`ab said to the group, ‘If he sits down, I’ll speak to him.’ The man threatened Mus`ab and warned him to leave the city and leave them all alone. Mus`ab smiled warmly and invited him to sit down and hear what he had to say. He added that if the man liked what he said he could accept it and if he didn’t like it, he would leave and not bother him again. The man agreed. He sat down and listened. Mus`ab did not compel him to do anything; he didn’t ridicule him or argue with him. Mus`ab simply recited the Qur’an and explained the simply and beautiful message of Islam. The man’s face changed and became radiant. It was clear that faith had entered his heart. He accepted Islam. More and more people accepted Islam at the hands of Mus`ab, through the mercy of Allah the Almighty. The first ambassador of the Prophet (peace be upon him) was extremely successful.