'Imran bin Hussain (May Allah be pleased with them) reported:
I heard the Messenger of Allah (ﷺ) saying, "Between time of the creation of Adam and the Resurrection Day, there is nothing greater than the mischief of Dajjal (the Antichrist)."[Muslim].
App reference: Book 19, Hadith 7
Arabic/English book reference: Book 19, Hadith 1814