Sahih al-Bukhari, Hadith 3596 ⓘ
Narrated `Uqba bin `Amr: The Prophet once came out and offered the funeral prayer for the martyrs of Uhud, and proceeded to the pulpit and said, "I shall be your predecessor and a witness on you, and I am really looking at my sacred Fount now, and no doubt, I have been given the keys of the treasures of the world. By Allah, I am not afraid that you will worship others along with Allah, but I am afraid that you will envy and fight one another for worldly fortunes."
حَدَّثَنِي سَعِيدُ بْنُ شُرَحْبِيلَ، حَدَّثَنَا لَيْثٌ، عَنْ يَزِيدَ، عَنْ أَبِي الْخَيْرِ، عَنْ عُقْبَةَ بْنِ عَامِرٍ، أَنَّ النَّبِيَّ صلى الله عليه وسلم خَرَجَ يَوْمًا فَصَلَّى عَلَى أَهْلِ أُحُدٍ صَلاَتَهُ عَلَى الْمَيِّتِ، ثُمَّ انْصَرَفَ إِلَى الْمِنْبَرِ، فَقَالَ " إِنِّي فَرَطُكُمْ، وَأَنَا شَهِيدٌ عَلَيْكُمْ، إِنِّي وَاللَّهِ لأَنْظُرُ إِلَى حَوْضِي الآنَ، وَإِنِّي قَدْ أُعْطِيتُ خَزَائِنَ مَفَاتِيحِ الأَرْضِ، وَإِنِّي وَاللَّهِ مَا أَخَافُ بَعْدِي أَنْ تُشْرِكُوا، وَلَكِنْ أَخَافُ أَنْ تَنَافَسُوا فِيهَا " .
also referenced under: Book 61, Hadith 104 (In-Book) & Volume 4, Book 56, Hadith 795 (USC-MSA)