Muhammad ibn Abd al-Wahhab notable work Kitab al-Tawhid
Journey to Basra
Following his early education in Medina, Ibn ʿAbd-al-Wahhab traveled outside of the Arabian Peninsula, venturing first to Basra which was still an active center of Islamic culture. During his stay in Basra, Ibn 'Abd al-Wahhab studied Hadith and Fiqh under the Islamic scholar Muhammad al-Majmu'i. In Basra, Ibn 'Abd al-Wahhab came into contact with Shi'is and would write a treatise repudiating the theological doctrines of Rafidah, an extreme sect of Shiism. He also became influenced by the writings of Hanbali theologian Ibn Rajab (d. 1393 C.E/ 795 A.H) such as "Kalimat al-Ikhlas" which inspired Ibn 'Abd al-Wahhab's seminal treatise "Kitab al-Tawhid".On non-Muslims
According to the political scientist Dore Gold, Muhammad ibn ʿAbd al-Wahhab presented a strong anti-Christian and anti-Judaic stance in his main theological treatise Kitāb at-Tawḥīd, describing the followers of both Christian and Jewish faiths as sorcerers who believe in devil-worship, and by citing a hadith attributed to the Islamic prophet Muhammad he stated that capital punishment for the sorcerer is "that he be struck with the sword". Ibn ʿAbd al-Wahhab asserted that both the Christian and Jewish religions had improperly made the graves of their prophet into places of worship and warned Muslims not to imitate this practice. Ibn ʿAbd al-Wahhab concluded that "The ways of the People of the Book are condemned as those of polytheists."However, Western scholar Natana J. DeLong-Bas defended the position of Muhammad ibn ʿAbd al-Wahhab, stating that
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