Valmiki Ramayana Aranya Kanda Sarga 29 Shloka 22

पाशहस्तः holding the noose of death, अन्तकः Yama, त्रयाणाम् for the three, लोकानामपि इव worlds also, रणे in war, तव your, प्राणान् life, हन्तुम् to kill, गदापाणिः weilding mace, अहम् I, पर्याप्तः enough.

Just like lord Yama, holding a noose of death is alone enough to destroy the three worlds, I am alone sufficient to take away your life in war, a mace in hand.