From Sahih Bukhari (Hadith 3659):
Narrated Jubair bin Mut`im:A woman came to the Prophet (ﷺ) 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 (ﷺ) said, "If you should not find me, go to Abu Bakr
Reference: Bukhari 3659