After the first battle what trophy does beowulf hang from the rafters of the hall

I belive it's the arm of Grendel

Explanation:

"Beowulf summons even greater strength and rips Grendel's arm completely out of its socket. Fatally wounded, Grendel slinks back to his swampy home to die. Back in the mead-hall, Beowulf holds up his gory trophy in triumph. He proudly hangs the arm high on the wall of Heorot as proof of his victory."