Musnad Abu Ya'la al-Mawsili 246:12

Zuhayr narrated to us, Yazid narrated to us, Ibrahim bin Sa'd informed us, from his father, from Ibn Jubayr bin Mut'im, from his father: That a woman came to the Prophet, may Allah bless him and grant him peace, asking him for something. He said to her, "Return to me." She said to him, "O Messenger of Allah, if I return and do not find you?"—implying death. He said, "If you do not find me, then go to Abu Bakr."