The scores remained level at 0-0 until the half-time break, but Matt
Ritchie produced the decisive strike in the 65th minute to secure all
three points for the Magpies.
The victory lifted Benitez's side from 16th to 13th in the Premier
League standings and the Spaniard is hoping his players can maintain the
commitment they showed against the Red Devils.
"(The win gives us) confidence for the rest of the season," Benitez told Sky Sports.
"When you play a top side like Manchester United you know every ball
is important because if you make a mistake they will punish you. You
have to work like they did today, it was an amazing effort.
"We were doing well for a while and then we were defending but the
teamwork and the way they fought for every ball was amazing. I am really
pleased for the players and the fans because we did it here at home," he said.
"The team worked so hard and in this kind of game, anything
can happen. We showed the character, passion, and commitment that we
have shown for the rest of the season."