Musnad Ahmad 27:330

Waki’ narrated to us, Abdullah bin Sa’id bin Abi Hind narrated to us, from his father, from Ibn ‘Umar, who said: When the Messenger of Allah (peace and blessings of Allah be upon him) would enter Makkah, he would say: "O Allah, do not make our deaths occur therein until You bring us out of it."