Sahih Bukhari

Narrated Jubair bin Mut`im:A woman came to the Prophet (ﷺ) and spoke to him about something and he told her to return to him. She said, ""O Allah's Messenger (ﷺ)! If I come and do not find you?"" (As if she meant, ""...if you die?"") The Prophet said, ""If you should not find me, then go to Abu Bakr