Annan, for safety's sake, had the "old man" put on iron gloves.
This was a special method used when imprisoning Ritualists.
No one knew what bizarre and peculiar rituals they had mastered... nor could they predict what seemingly insignificant objects might be used to launch a sudden attack.
But where there was a problem, there was a solution.
The tool specifically designed for Ritualists, was the "Iron Glove."
It was similar to handcuffs, but in front of the handcuffs, a joint-immobilizing iron glove was fitted. The joints of the iron glove were slightly bent, neither touching nor fully opposite, nor were the fingers fully extended.
Such a posture did not meet the requirements of any ritual... and as their wrists were locked with handcuffs, the movements of the fingers could not be changed at all.
Only by controlling them with such a device could a Ritualist's actions be completely obstructed.