Abu Dawud
Trials And Fierce Battles
Book Number: 030 / Hadith Number: 4251
Narated By Abu Hurairah : The Prophet (pbuh) said: There will be civil strife (fitnah) which will render people deaf, dumb and blind regarding what is right. Those who contemplate it will be drawn by it, and giving rein to the tongue during it will be like smiting with the sword.