Valmiki Ramayana Aranya Kanda Sarga 3 Shloka 15
Original Shlokaस विनद्य महानादं शूलं शक्रध्वजोपमम्। प्रगृह्याशोभत तदा व्यात्तानन इवान्तकः।।3.3.15।।
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तदा then, सः that, महानादम् loud noise, विनद्य producing, शक्रध्वजोपमम् like Indra's banner, शूलम् spike, प्रगृह्य taking, व्यात्ताननः with wide open mouth, अन्तकः god of death, इव like, अशोभत shone.
The demon who produced a great noise with his wide open mouth resembled the god of death. He lifted a sharp spike that looked like Indra's banner.