Vijnana Bhairava Tantra · Dharana 11 · Verse 34
The space inside the skull
Sit with the eyes closed. Bring attention inside the head and let it rest there, in the space within the skull, as if the head were a dark and quiet room. Do not look for anything in particular. Simply keep the mind there, gently and steadily. The text says that as the mind grows steady, the highest goal gradually comes into view.
Older line
With the eyes closed, place the mind within the skull. As the mind grows steady, the supreme goal is gradually perceived.