Methodology of the topic of Mahdaviat in the Qur'an

Mahdaviat is an Islamic and interreligious belief that has its roots in the Qur'an and the Shia and Sunni hadiths. But in Againsts  to challenge the Shiites and fight with Ahl al-Bayt school try to make the Mahdaviat of Shiite Mahdi appear as illusory and imaginary. They are trying to insinuate that Mahdaviat does not have any Qur'anic documents, and through this way, they are trying to undermine the foundations of Shia thinking about Mahdaviat and her absence, While it is necessary to know the cases and examples of the issue of Mahdaviat in the Qur'an, familiarity with the language of the Qur'an. Our claim is that Mahdaviat has been expressed in the Qur'an in the form of mentioning the purpose and goal of the sending of the prophets as well as the goal and purpose of human creation.