। ॥
In plain words
Whoever does not contemplate the great void, which has the form of space and pervades all, will remain bound to saṃsāra in the world, like the worm in its cocoon.
Word for word
The great void which has the form of space, which pervades all: whoever does not contemplate it, he will be bound to saṃsāra in the world, like the worm in its cocoon.