شيخ الإسلام
According to Ibn Humayd, Ibn ʿAbd al-Wahhab's father criticized his son for his unwillingness to specialize in jurisprudence and disagreed with his doctrine and declared that he would be the cause of wickedness. Similarly his brother, Sulayman ibn 'Abd al-Wahhab, wrote one of the first treatises refuting the Wahhabi doctrine, "The Divine Thunderbolts in Refutation of Wahhabism" ("Al-Šawā'iq Al-Ilāhiyya fī Al-radd 'alā Al-Wahhābiyya"), affirming that Muhammad was ill-educated and intolerant, and classing his views as fringe and fanatical. Sulayman's first anti-Wahhabi treatise was followed by a second book, "The Unmistakable Judgment in the Refutation of Muhammad ibn 'Abd al-Wahhab" ("Faṣl al-Ḫiṭāb fī Al-radd 'alā Muḥammad ibn ‘Abd al-Wahhāb"). Both Muhammad ibn ʿAbd al-Wahhab's father and brother disagreed with him and didn't share his doctrinal statements because they considered his doctrine, and the way he intended to impose it in Arabia, too extreme and intolerant. The Arabian historian Ahmad ibn al-Zayni Dahlan, Shaykh al-Islām and Grand Mufti of the Shafi'i madhab in Mecca, recorded the account of the dispute between Muhammad ibn ʿAbd al-Wahhab and his brother Sulayman, reporting that: