411 REFERENCE · Wikibooks
Chess Opening Theory/1. e4/1...c5/2. Nf3/2...d6/3. d4/3...Nf6/4. dxc5
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Sicilian, Najdorf rd nd bd qd kd bd rd pd pd pd pd pd pd pd nd pl pl nl pl pl pl pl pl pl rl nl bl ql kl bl rl
dxc5 seems like an enticing move for white for a queen exchange and displacing black's king but is easily diffused in this line with Nxe4.
Nc3 is currently the preferred white move in the main line, however Bb5 or Bg5 are widely accepted but less played through openings.