Sayyiduna Ma'qil bin Yasar (may Allah be pleased with him) went to Ubaydullah bin Ziyad to visit him, and Ma'qil (may Allah be pleased with him) said to him: I heard the Messenger of Allah (peace and blessings be upon him) say: "The punishment of this Ummah is the sword, and their appointed time is the Hour, and the Hour is more grievous and more bitter."
Hadith Referenceالمعجم الكبير للطبراني / باب الميم / 17594