‘Āshūr (Assyria) was the capital city of the Old Assyrian Empire (2025–1750 BC). The remains of the city are situated on the western bank of the Tigris River, north of the confluence with the tributary Little Zab. The name, Zab, is the Stone Age biliteral root *ZB “penis,” an invention of the tribe of ‛Āad, the ancestral origin of the Assyrians. The orighinal homeland of ‛Āad is Southern Arabia but they controlled most of Arabia and later most of the Arabian Peninsula for thousands of years. Occupation of the city is said to have lasted some 4,000 years.