"[Religious leader Abdullah] Hashem teaches that even prophets made mistakes, as only God is infallible by nature. However, Jesus and Muhammad made only minor occasional mistakes and Muhammad, his daughter Fatimah[, and] the Twelve Imams can be called inherently infallible, and the Twelve Mahdis, including the Qaim/Riser, are in the category of “earned infallibility.” This does not mean that the covenant of Muhammad is still in force, and at any rate we do not know the integrality of his teachings, as the Quran that we have today is incomplete and corrupted."