Matthew 15:2 records the same complaint about disciples not washing hands — the tradition of the elders that Jesus challenges.

Matthew 15:3 has Jesus' reply: 'Why break God's command for your tradition?' — the same counter-argument implied here.

Mark 7:2 describes the same observation of disciples eating with unwashed hands, giving another account of the tradition.

Matthew 15:11 teaches that internal defilement matters, not external washing — directly addressing the issue behind the Pharisee's astonishment.

Matthew 15:20 explicitly states unwashed hands do not defile, directly rebutting the Pharisee's implied stance.

Mark 7:4 describes the Pharisees' tradition of washing from the marketplace, detailing the practice referenced in Luke.