[The Saucepan Man]

Rumil may well have it. But, if not, his answer prompted a thought in my head, so if my arrow meets its mark, I have him to thank.

The Teeth of Scatha, the Dragon?

Daggers wrenched from owner's hold - Sharp as daggers, they were prised by Fram from the dead Dragon's mouth.
Dearer bought than jewels or gold - Purchased by the slaying of a Dragon.
Seed of hatred, gift of scorn - Scatha's hoard was the source of dispute between Fram's people and the Dwarves of the Grey Mountains and Fram's scornful gift to them of the Teeth prompted war.
Still we sting, a wreath of thorn Hmm, not sure about this one. Possibly, it refers to Fram's death at the Dwarves' hands.