This is the grip that the scholar before me said that I can do. I can hurt you with no trouble. I keep hold of your sword hilt, and thrusts and cuts I will give you cheaply. And this play breaks every disarm of the sword and doing it quickly ruins the narrow play.
The mechanics of this very interesting play have a lot in common with making a ligudura mezana (middle bind). The base movement is two consecutive hooking blocks. When making a ligadura mezana, you spiral your hand around your opponents arm. Here, you spiral it around their sword. The biggest difference between the two techniques is context.
As the scholar tells us, the action for this play starts with the previous play. As the 5th scholar, you have stepped through with your left foot and made a hooking block with your left hand. Continue the motion, rolling over the top of your opponents hands and trapping the blade under your armpit. You will need to move fast and smoothly, to prevent your opponent stepping back and sliding the length of the blade along either your inner arm or ribcage.
Using a second hooking block, roll your forearm under the blade and grab the crossbar of your opponents sword. You have now pinned their sword as shown. With no means to defend themselves, you opponent is open to any cuts or thrusts you choose to make.