Sahih Bukhari
Companions of the Prophet
Volume: 005 / Book Number: 057 / Hadith Number: 11
Narrated Jubair bin Mutim:
A woman came to the Prophet who ordered her to return to him again. She said, "What if I came and did not find you?" as if she wanted to say, "If I found you dead?" The Prophet said, "If you should not find me, go to Abu Bakr."