Pilgrimage to Mecca (Arabic Makkah), in Saudi Arabia, that should be undertaken by every Muslim at least once in a lifetime, unless he or she is prevented by financial or health difficulties. A Muslim who has been on hajj may take the additional name Hajji. Many of the pilgrims on hajj also visit Medina, where the prophet Muhammad is buried.
The flags of Qatar and Bahrain are very similar, reflecting the countries' historical links. The proportions of the Qatari flag are unique. Effective date: c. 1949.