(8) باب لاَ تَقُومُ السَّاعَةُ حَتَّى يَحْسِرَ الْفُرَاتُ عَنْ جَبَلٍ مِنْ ذَهَبٍ
Abu Huraira reported Allah's Messenger (ﷺ) as saying:
The Last Hour would not come unless the Euphrates would uncover a treasure of gold, so he who finds it should not take anything out of that.
Reference: Sahih Muslim 2894 c
In-book reference: Book 54, Hadith 40
USC-MSA web (English) reference(deprecated numbering scheme): Book 41, Hadith 6920