“What has it got in its pocketses?” he heard the hiss loud behind him, and the splash as Gollum leapt from his boat. “What have I, I wonder?” he said to himself, as he panted and stumbled along. He put his left hand in his pocket. The ring felt very cold as it quietly slipped on to his groping forefinger.
The hiss was close behind him. He turned now and saw Gollum’s eyes like small green lamps coming up the slope. Terrified he tried to run faster, but suddenly he struck his toes on a snag in the floor, and fell flat with his little sword under him.
In a moment Gollum was on him. But before Bilbo could do anything, recover his breath, pick himself up, or wave his sword, Gollum passed by, taking no notice of him, cursing and whispering as he ran.

Chapter 5 Riddles in the Dark