The French striker played the full 90 minutes and set up two of United’s three goals as the Red Devils returned to winning ways with a convincing victory.
Goals from Wayne Rooney, Daley Blind and Juan Mata handed Louis van Gaal’s men the win as they became the first team to secure their place in the fifth round draw.
And Martial was clearly thrilled to play his part in the victory, as he posted the photo above on his personal Instagram account on Saturday afternoon and wrote: “Great win yesterday #FAcup”
United headed into the game after slumping to a disappointing 1-0 loss to Southampton last weekend.
The Red Devils will now turn their attention to their home clash with Stoke City on Tuesday night in the Premier League.
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