The ruling house was associated with the Islamic prophet Muhammad via Fatimah, the wife of Ali, the fourth Muslim Caliph.On 17 November 1915, Sultan Yusef signed a dhahir that made Morocco's flag red with a green interlaced pentangle.[4] While Morocco was under French and Spanish control, the red flag with the seal in the center remained in use but only inland since its use at sea was prohibited.The star shall be open, palm green, made of five continuous branches and woven in the same fabric where it must be visible on both sides of the flag.The width of each one of the branches of the star shall be 1⁄20 of its length.On May 8, 2010, a Moroccan flag with a size of 60,409.78 square metres (650,000 sq ft; 14.9 acres), weighing 20,000 kilograms (22 short tons), was set in Dakhla, a city in the disputed territory of Western Sahara.