To repeat the glitch, you need assault
boots or knife sheath.

1. Equip assault boots or knife sheath.
2. Take the knife in hand.
3. Lie on the ground with a knife in hand.
4. Press the green triangle on the gamepad to place the knife in the knife sheath but nothing will happen.
5. Try to pick up something from the inventory, nothing works, and your hands don't work
6. Jump to fix the problem