I was standing along with Ubayy b. Kaʿb and he said: The opinions of the people differ in regard to the achievement of worldly ends. I said: Yes, of course. Thereupon he said: I heard Messenger of Allah ﷺ as saying: The Euphrates would soon uncover a mountain of gold and when the people would bear of it they would flock towards it but the people who would possess that (treasure) (would say): If we allow these persons to take out of it they would take away the whole of it. So they would fight and ninety-nine out of one hundred would be killed. Abu Kamil in his narration said: I and Ubayy b. Kaʿb stood under the shade of the battlement of Hassan. (Using translation from Muslim 2895)   

لِي أُبَيٌّ أَلَا تَرَى النَّاسَ مُخْتَلِفَةً أَعْنَاقُهُمْ فِي طَلَبِ الدُّنْيَا؟ قَالَ قُلْتُ بَلَى قَالَ سَمِعْتُ رَسُولَ اللهِ ﷺ يَقُولُ يُوشِكُ الْفُرَاتُ أَنْ يَحْسِرَ عَنْ جَبَلٍ مِنْ ذَهَبٍ فَإِذَا سَمِعَ بِهِ النَّاسُ سَارُوا إِلَيْهِ فَيَقُولُ مَنْ عِنْدَهُ وَاللهِ لَئِنْ تَرَكْنَا النَّاسَ يَأْخُذُونَ فِيهِ لَيَذْهَبَنَّ فَيَقْتَتِلُ النَّاسُ حَتَّى يُقْتَلَ مِنْ كُلِّ مِائَةٍ تِسْعَةٌ وَتِسْعُونَ وَهَذَا لَفْظُ حَدِيثِ أَبِي عَنْ عَفَّانَ  

[Machine] I heard the Messenger of Allah ﷺ saying, "The Euphrates River will soon dry up and leave behind a mountain of gold." Then he mentioned the hadith.  

سَمِعْتُ رَسُولَ اللهِ ﷺ يَقُولُ يُوشِكُ الْفُرَاتُ أَنْ يَحْسِرَ عَنْ جَبَلٍ مِنْ ذَهَبٍ فَذَكَرَ الْحَدِيثَ