Córdoba, Spain is often said to have had street lights in its Muslim period, which ended in 1236. How did those street lights work?
In Lawrence of Arabia, Prince Faisal was dramatized as having said to Lawrence: "You know, Lieutenant, in the Arab city of Córdoba were two miles of public lighting in the streets when London was a village." Similarly, Ibn Said is said to have reported that "the streets were well paved and lighted, the lights being attached to the outer doors and corners of the houses", as quoted in a link from this answer.
Can anyone provide details on this? In particular, what fueled those street lamps -- was it olive oil?