Riḍā regarded some of the Wahhābīs, including the Ikhwān, as extremists.80 But he denied that they represented the true spirit of Wahhābism, a term that he used neutrally and that he described as a movement of reform and renewal (al-iṣlāḥ waʾl-tajdīd). Muḥammad ibn ʿAbd al-Wahhāb, he wrote, was a mujaddid, a renewer of Islam, who taught the people of Najd the proper understanding of tawḥīd as expounded by Ibn Taymiyya.