كتب : Mohamed Sabe
Goals from Sultan Al-Saud, Mohamed Al-Shalhoub, and Brazilian Alfa Rodrigo secured the win for the hosts and took their tally to 44 points.
Hilal are in charge of the Saudi league table, leading second placed Al-Wehda by 5 points with four games to play.
The Saudi league system dictates that the top four clubs advance to the final stage of the competition.
Elsewhere, Al-Shabab registered a 2-0 win over Al-Ittifaq, courtesy of second-half goals from Iraq international Nashaat Akram and Ghanaian Godwin Atram.