He can feel the man's strength slowly waning, and Obi-Wan all but hurls them into the cool darkness of his hut, practically carrying Jacen down the few steps that submerge half the house to help retain that coolness.

"Sit," he commands roughly, though he's gentle in easing Jacen onto a padded chair, before hurrying over to his personal water cistern. He's fortunate that he has a large supply, and can readily draw from what he's saving to sell if he needs to, so first Obi-Wan wets a large muslin cloth, barely wringing it out before taking it over and draping it over the boy's head, pressing the cloth down so it touches the back of his neck as well as the sides of his face all the way to his cheeks, leaving only his eyes, nose and mouth exposed.

Then he returns to the cistern and fills a glass full of water, moving back and placing it in Jacen's hand, helping to wrap his fingers around the glass and support its weight; he doesn't trust the young man not to spill it if he lets go. "You need to drink this, but slowly. Small sips, or it will come back up."

These are his immediate concerns for the boy's health. Once this is taken care of, he'll assess him for other injuries.