As the butter that lies within milk is churned up by churing rods, so the desires that are created in the mind draw together the vital sced that lies within the body.
पयस्यन्तर्हितं सर्पिर्यद्वन्निर्मथ्यते खजैः। शुक्र निर्मथ्यते तद्वद् देहसंकल्पजैः खजैः॥