It was conveyed that the Mujadid strengthens the proofs of Islam and guides the Muslims to be become more committed to following Islam. He will bring the knowledge to the people during his time and facilitate the Islamic rulings.
He has to be alive part of the previous century and the century after. Both; so that his coming is on the top of the hijriyy century.
He has to have learned through sanad to the Prophet صلى الله عليه وسلم and has understood well the issues which Muslims encounter during his era.
The Mahdiyy‘ scars is much easier. 300 angels will accompany him and an angel will call and say: this the khaleefah of Rasoolullaah follow him.
His name is Muhammad the son of ‘Abdullaah and he will come when earth is filled with injustices. It is now filled. He will fill it with justice and equity.