Chapter 38Feelings and Sensations in the Process of Descent · Perforation
Book 13. Part Four: The Fundamental Realisations of · Section Four: The Spiritual Transformation
If it is a feeling of a covering being perforated, then that is a sensation one often has when the Force is opening a way for itself through some resistance — here it must be in some part of the physical mind.
Keep full reliance on the Mother. When one does that, the victory even if delayed, is sure.