Certain shaven-headed, false scholars will appear in the time of Hazrat Mahdi (as) and deviate from the moral values of Islam by their statements

From Hazrat Ali (ra):

Such a nation will appear in the End Times that THEY WILL RECITE THE QUR’AN BUT IT WILL NOT PASS DOWN THEIR THROATS. THEY WILL BE ABJURED FROM RELIGION LIKE AN ARROW HURLED FROM A BOW. AND EVERY MUSLIM HAS A RIGHT TO STRUGGLE WITH THEM. THEY WILL HAVE SHAVEN HEADS... (Abu Abdur Rahman Ahmad Ibn Shu’aib an-Nasai, Hazrat Ali through the Hadiths,  p. 142)

Our Prophet (saas) refers in his hadiths to certain so-called religious scholars who will appear in the time of Hazrat Mahdi (as), in other words in the End Times. One of the hadiths in question has been narrated from Hazrat Ali (ra). In this hadith, our Prophet (saas) stated that these people boast of speaking Arabic very fluently and properly and of reciting the Qur’an very accurately, but when it comes to implementing the commands of the religion and properly understanding the verses of the Qur’an, they are insincere. Our Prophet (saas) described their situation in the words, “… they will recite the Qur’an but it will not pass down their throats…” With their deeds and words, these false religious scholars will entirely deviate from the true path of the Qur’an. These people will not speak of the dominion of Islamic morality, and their intention will be to impair Muslims’ enthusiasm and determination. They will depart from the state of mind of optimism and submission to Allah that is unique to Muslims, and will look at events through the superficial eyes of the ignorant. Their words will conflict with the Qur’an and the moral values of Islam. True Muslims, while striving against those who deny Allah and the religion, will in the meantime struggle against people with this mindset, who seek to conceal the global dominion of religious moral values, and to spread mischief among Muslims. Our Prophet (saas) revealed in the hadith that all Muslims have a duty to wage an intellectual struggle against such people. Our Prophet (saas) also provided a piece of information about the hairstyles of these people in the End Times, so that they can be recognized.