The Ain i Akbari, Abū al-Faz̤l ibn Mubārak, Henry Sullivan Jarrett, pp. 68, Asiatic Society of Bengal, 1894, ... Yakub-b-Leith as Saffar, founder of the Saffaride dynasty had a castle here. Ram Shahristan on the Helmand, was the capital before Zaranj but the river having changed its course and abandoned the town, the inhabitants left it and built Zaranj at a distance of 3 farsakh ...