OUTSPOKEN Muslim cleric Sheik Taj el-Dene Elhilaly believes "enemies" are using "advanced sciences" to divide Muslims and called on the world's Islamic communities to unite. His latest rant comes as Federal Immigration Minister Kevin Andrews yesterday issued the mufti with an ultimatum: Shut up or leave Australia. The controversial imam used an appearance at an Islamic unity conference in the Iranian capital Tehran to attack those he said wanted to divide the Muslim world. "(The) enemy is trying to postpone Muslims' awareness through his advanced sciences. Enemies are trying to create disunity in the Islamic world," the cleric said.