Jami` at-Tirmidhi 2178
جامع الترمذي#2178Da'ifAbdullah bin 'Amr narrated that the Messenger of Allah (s.a.w) said:"There shall be a Fitnah of extermination of the 'Arabs. Its fighters are in the Fire. During it, the tongue is stronger then the sword
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Ahmad Muhammad ShakirDaif
Al-AlbaniDaif
Zubair Ali ZaiDaif
In-book reference: 33:21