English: Melikah is compared to hakatarah: just as hakatarah is of the head by itself and the body by itself, so melikah separates head and body.
In the sugya: The hekesh transfers the separation principle. Just as the subsequent burning treats head and body as distinct units, the melikah that produces those units must itself effect the separation.
Type of Learning
Hekesh for separation of head and body.
What Is Learned
Melikah divides the head from the body as distinct units for the subsequent burning. The comparison to hakatarah requires that the nipping produce a separated head and a separated body, each later burned on its own.