na—not; tasya—of him (Namuci); hi—indeed; tvacam api—even the skin; vajrah—the thunderbolt; urjitah—very powerful; bibheda—could pierce; yah—the weapon which; sura-patina—by the king of the demigods; ojasa—very forcefully; iritah—had been released; tat—therefore; adbhutam param—it was extraordinarily wonderful; ativirya-vrtra-bhit—so powerful that it could pierce the body of the very powerful Vrtrasura; tiraskrtah—(now in the future) which had been repelled; namuci-sirodhara-tvaca—by the skin of Namuci’s neck.