This sound is from Georges St Pierre Soundboard

Georges St-Pierre retired as the reigning Welterweight Champion in December 2013. He held the record for most wins in title bouts and the second longest combined title streak in UFC history (2,204 days) He won the title twice and the interim title once between November 2006 and April 2008.
See also: Matt Serra, Firas Zahabi, Tristar Gym, UFC 63, UFC 158, and List of UFC champions.