Vijnana Bhairava Tantra · Dharana 65 · Verse 88
The dark behind closed eyes
Sit in a darkened room, or simply close your eyes, and look into the darkness in front of you. Do not hunt for lights. Then open your eyes and let that same darkness seem to spread everywhere. Rest as the dark itself. If shapes appear, let them pass. This darkness is not gloom. It is the absence of anything to grasp.
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Close the eyes and contemplate the darkness before you. Then, opening them, see that darkness spread everywhere as the form of Bhairava, and become one with it.