§ Of the Ruin of Doriath The Silmarillion

Then Mîm in great fear besought Húrin to take what he would, but to spare his life; but Húrin gave no heed to his prayer, and slew him there before the doors of Nargothrond. Then he entered in, and stayed a while in that dreadful place, where the treasures of Valinor lay strewn upon the floors in darkness and decay; but it is told that when Húrin came forth from the wreck of Nargothrond and stood again beneath the sky he bore with him out of all that great hoard but one thing only.