محمد بن سعود (Muhammad bin Saud) was the founder of the first Saudi state, known as the Emirate of Diriyah, in the 18th century. He was born in 1687 and played a crucial role in uniting various tribes in the Arabian Peninsula. His alliance with محمد بن عبد الوهاب (Muhammad ibn Abd al-Wahhab), a religious reformer, helped establish a strong political and religious foundation for the state. Under محمد بن سعود's leadership, the Emirate expanded significantly, promoting the Wahhabi interpretation of Islam. His reign marked the beginning of the Saudi dynasty, which continues to influence the region today. He died in 1765, leaving a lasting legacy in Saudi history.