The reign of Saud bin Abdulaziz began in 1803. Upon his accession to the throne he held the titles of both Emir and Imam like his father. Following the capture of Mecca he sent a letter to Ottoman Sultan
Selim III, inviting him to follow the Wahhabi theology. Such religious transformations did not sit well with other Muslims, and many other Muslims found his actions to be extreme, and were stunned that the holy cities had been taken so easily. The Ottoman Empire did not want to relent control over the cities to local tribesmen. The Ottomans could not retake the cities on their own though as the bulk of their forces were tied up in Europe.
Muhammad Ali, the viceroy of Egypt, was assigned to recapture the Arabian territories in 1809. One of his sons, commanding the Egyptian troops, succeeded in re-conquering Hijaz in 1813. ==Personal life and death==