The 25-year-old continued his impressive goalscoring form and helped Erik ten Hag's men earn a crucial win at the Johan Cruyff Arena
Hakim Ziyech scored his sixth league goal of the season as Ajax thrashed Feyenoord 3-0 in Sunday's De Klassieker.
The Moroccan playmaker grabbed his fourth consecutive goal in the Dutch top-flight as the Sons of Gods eased past their arch rivals who were reduced to 10 men after five minutes into the game.
Goalkeeper Justin Bijlow conceded an own goal to give Ajax the lead in the 22nd minute while Ziyech doubled the lead with four minutes remaining before the half-time call.
Dusan Tadic sealed the victory in the 80th minute as they close the gap on leaders PSV to five points.
Cameroon goalkeeper Andre Onana and Morocco's Noussair Mazraoui were also in action for the winning team.
Ajax remain in the second spot in the Eredivisie table with 25 points from 10 games and they host Go Ahead Eagles next for Wednesdayâ€™s Dutch Cup tie.