During the lifetime of the Prophet Muhammad, the first mobile Islamic center was a tent set up by female caretaker, Rufaydah al-Asalmiyah. In 627 AD during the 27 day Battle of Khandaq, also known as the Battle of Ditch, al-Asalmiyah treated wounded soldiers under a tent. Later on, these mobile care centers would evolve from one or two tents to enormous units of medical care equipped with medicinal herbs, food, physicians, and pharmacists. The idea was to be able to better extend medical care to rural communities that lived on the outskirts of major cities. Under the Seljuq Sultanate reign of Muhammad Saljuqi, a single mobile care center required 40 camels for transportation.