then said beren : `` ward thy life an thou canst , 0 crook-legged murderer , else will i take it , '' and naugladur bid him even the nauglafring , the necklace of wonder , that he be suffered to go unharmed ; but beren said : `` nay , that may i still take when thou art slain , '' and thereat he made alone upon naugladur and his companions , and having slain the foremost of these the others fled away amid elfin laughter , and so beren came upon naugladur , slayer of tinwelint .