https://youtu.be/zn-HeIr29ho

• A player shall not use the arms, hands, hips, or shoulders to:
  • Force their way through a screen
  • Hold a screener and then push them aside to maintain guarding position
• It is illegal to:
  • Extend one or both arms fully or partially (other than vertically) in a way that hinders an opponent’s freedom of movement when contact occurs
  • Extend elbows and make contact when:
    • Hands are on the hips
    • Hands are near the chest
    • Arms are held approximately horizontal to the floor while not holding the ball
• These illegal actions most commonly occur during:
  • Rebounding
  • Screening
  • Post play