The Thamud were an ancient tribe or tribal confederation in pre-Islamic Arabia that occupied the northwestern Arabian Peninsula. They are attested in contemporaneous Mesopotamian and Classical inscriptions, as well as Arabic ones from the eighth century BCE, all the way until the fifth century CE, when they served as Roman auxiliaries. They are also later remembered in pre-Islamic Arabic poetry and Islamic-era sources, including the Quran. Prominently, they appear in the Ruwafa inscriptions discovered in a temple constructed circa 165–169 CE in honor of the local deity, ʾlhʾ.