Flag of Saudi Arabia
|Design||A green field with the Shahada or Muslim creed written in the large Thuluth script in white above a white horizontal saber, in which the tip of the saber points to the hoist-side in the center. |
The Al Saud, the ruling family of Saudi Arabia, has long been closely associated with the Wahhabi religious movement. The Wahhabis, since the 18th century, had used the shahada on their flags. In 1902 Abdulaziz Abdulrahman Al-Saud, leader of the Al Saud and the future founder of the Kingdom of Saudi Arabia, added a sword to this flag. The design of the flag was not standardized prior to March 15, 1973, and variants with two swords and/or a white vertical stripe at the hoist were frequently used. By 1938, the flag had basically assumed its present form, except the sword had a different design (with a more curved blade) and it, along with the shahada above, took up more of the flag's space. 
The green of the flag represents Islam and the sword stands for the House of Saud, the founding dynasty of the country, or the military strength and prowess of Saudi Arabia.
The Arabic inscription on the flag, written in the calligraphic Thuluth script, is the shahada or Islamic declaration of faith: لَا إِلٰهَ إِلَّا الله مُحَمَّدٌ رَسُولُ الله (There is no god but God: Muhammad is the Messenger of God).