After the meal the Prophet expressed his mission and invited...

After the meal the Prophet expressed his mission and invited the guests to Islam and said that whoever believed in Islam among them and assisted him would be his successor. All kept silent. The only one who accepted the invitation to assist him was Ali, a teenager at that time. The Prophet asked him to sit and repeated his invitation for the second and the third time. Again and again it was just Ali who expressed his readiness to support the Prophet.