Sunan Abi Dawud 4333
سنن أبي داود#4333SahihNarrated Abu Hurayrah: The Prophet (ﷺ) said: The Last Hour will not come before there come forth thirty Dajjals (fraudulents), everyone presuming himself that he is an apostle of Allah
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Muhyi Al-Din Abdul HamidSahih
Shuaib Al ArnautSahih
Zubair Ali ZaiIsnaad Sahih
In-book reference: 39:43