 Coming in after a period of mismanagement, Ubayd Allah soon set about expanding the fiscal resources of the government by leaning heavily on the non-Arab populations, resuming the extraordinary taxation and slave-tribute without apologies.His deputies Oqba ibn al-Hajjaj al-Saluli in Córdoba (Al-Andalus) and Omar ibn el-Moradi in Tangier (Maghreb) were given similar instructions.The failure of expensive expeditions into Gaul during the period 732-737, repulsed by the Franks under Charles Martel, only increased the tax burden.