English: “On the head” — and not on the neck, and not on the back, and not on the chest.
In the sugya: Location is fixed. Nearby body parts — neck, back, chest — do not satisfy “on the head.” The hands must rest on the rosh itself.
Type of Learning
Miyut from “on the head” — neck, back, and chest are out.
What Is Learned
The hands must rest on the head of the animal, not on other body parts. “On the head” is a precise placement rule, not a general “upper body” allowance.