§ Of the Ruin of Doriath The Silmarillion

Here it must be told that after the departure of Glaurung Mîm the Petty-Dwarf had found his way to Nargothrond, and crept within the ruined halls; and he took possession of them, and sat there fingering the gold and the gems, letting them run ever through his hands, for none came nigh to despoil him, from dread of the spirit of Glaurung and his very memory. But now one had come, and stood upon the threshold; and Mîm came forth, and demanded to know his purpose. But Húrin said: 'Who are you, that would hinder me from entering the house of Finrod Felagund?'