One day the Prophet ﷺ went out and offered the funeral prayers of the martyrs of Uhud and then went up the pulpit and said, "I will pave the way for you as your predecessor and will be a witness on you. By Allah! I see my Fount (Kauthar) just now and I have been given the keys of all the treasures of the earth (or the keys of the earth). By Allah! I am not afraid that you will worship others along with Allah after my death, but I am afraid that you will fight with one another for the worldly things." (Using translation from Bukhārī 1344)
خَرَجَ رَسُولُ اللهِ ﷺ يَوْمًا فَصَلَّى عَلَى أَهْلِ أُحَدٍ صَلَاتَهَ عَلَى الْمَيِّتِ ثُمَّ انْصَرَفَ إِلَى الْمِنْبَرِ فَقَالَ إِنِّي فَرَطُكُمْ وَأَنَا شَهِيدٌ عَلَيْكُمْ إنِّي وَاللهِ لَأَنْظُرُ الْآنَ إِلَى حَوْضِي وَإِنِّي قَدْ أُعْطِيتُ خَزَائِنَ مَفَاتِيحِ الْأَرْضِ أَوْ مَفَاتِيحَ الْأَرْضِ وَإِنِّي وَاللهِ مَا أَخَافُ عَلَيْكُمْ أَنْ تُشْرِكُوا بَعْدِي وَلَكِنِّي أَخَافُ عَلَيْكُمْ أَنْ تَنَافَسُوا فِيهَا