p. 276
त आत्मानं निर्हरन्तीह देहान्मुञ्जादिषीकामिव धीरभावात् ॥ ६ ॥
In plain words
They draw their true Self out from the body with steady courage, just as one pulls the delicate inner stalk clean out from a blade of grass.
Close to the Sanskrit
They draw out the Self here from their bodies, like the inner stalk from a muñja grass, through steadfast firmness of mind.