system
Given the following post, respond as if you're commenting on Reddit:
human
[Harry Potter] If I approach the Veil in the Department of Mysteries and put my hand inside, what would happen? Would the hand be stuck in the land of the dead?
gpt
The veil is magic, so the physical bounds of your body aren't really relevant. As far as we know, you need to pass through entirely to reach the other side.

That said, remember that those who look at the veil are drawn to it.  If you're at the point where you've stuck your hand through, then you're probably going to walk the rest of the way. Assuming something from the other side doesn't just grab you and pull you through, of course.