This reflection was inspired by Q. 36:65. When you are no longer able to speak for yourself (have a voice of your own) you are no longer in charge. The metaphor of the limbs taking over is seen today in how many of us have lost our the ability to change or better our circumstances. Those whose works (hands) and travels (feet) are on auto pilot doing the same things without the ability to further grow and therefore becoming a testimony for their owner.
On this day we will seal their mouths, their hands will speak to us and their feet will testify to what they used to commit.