During "The Empire Strikes Back".
Summary: Luke and Han trapped one night on the Remote Ice World of
Hoth and their own private miseries.
Excerpt:
Cold.
His hands and feet had been so cold, but now it wasn't so bad.
The snow and the roar of wind must have calmed, or was it him? There was movement up ahead, and Luke lifted his head, or thought he did. Had Ben gone for help? He wondered.
"Ben," he called softly. It might have been a noise, in the greater white. There was no further movement in the blind rage that was Hoth.