Page 485 - Complete Krav maga : the ultimate guide to over 250 self-defense and combative techniques

3. Slide your hands along his forearms until you find a finger (usually the index
finger). Using either hand, peel the finger up, starting at the tip so that you only
deal with one part of the finger at a time. If you try to pry the finger up from the
base of the digit, or halfway to the tip, the attacker’s grip will be too strong.