a) because it is unjust to the Arabs and the Muslims, and b) because it creates only friction between the Muslims and their friends, the Allies.
"If the Jews need a place in which to live there are countries in Europe, America, and elsewhere that are larger, more fertile, and more convenient to their interests. This is justice and there is no use in facing the Allies and the Muslims with a problem from which neither will profit. As for the old Jewish inhabitants of Palestine, it is my opinion that the Arabs will agree with their friends, the Allies, on preserving their interests, provided that the Jews do not behave in a manner calculated to provoke trouble and disturbance, and will give an assurance guaranteed by the Allies, that they will not strive by their great financial power to buy up the Arabs' properties, which are their very life; this would mean loss and harm to the natives of Palestine, causing poverty and dissolution which would only create another problem."
This interview was published in The Times in London on June 30th, 1943.