(53) باب فِي الْحَوْضِ
Narrated `Uqba bin 'Amir:
Once the Prophet (ﷺ) went out and offered the funeral prayers for the martyrs of Uhud, and then went to the pulpit and said, "I am a predecessor for you and I am a witness for you: and by Allah, I am looking at my Fount just now, and the keys of the treasures of the earth (or the keys of the earth) have been given to me: and by Allah, I am not afraid that you will worship others besides Allah after me, but I am afraid that you will strive and struggle against each other over these treasures of the world."
Reference: Sahih al-Bukhari 6590
In-book reference: Book 81, Hadith 178
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 8, Book 76, Hadith 590