now seeing a form bend over him in the gloom sword in hand and feeling the smart of his foot he thought it was one of the orcs come to slay him or to torment him -- and this they did often , cutting him with knives or hurting him with spears ; but now turin feeling his hand free leapt up and flung all his weight suddenly upon beleg , who fell and was half-crushed , lying speech- less on the ground ; but turin at the same time seized the sword and struck it through beleg 's throat or ever flinding might know what had betid .