Ramayana
स वृत्र इव वज्रेण फेनेन नमुचिर्यथा । बलो वेन्द्राशनिहतो निपपात हतः खरः ॥ ३-३०-२८
Khara fell down just like Vrutra or Bala killed by Indra's thunderbolt or like Numuchi by the froth of the sea. ॥ 3-30-28॥
english translation
sa vRtra iva vajreNa phenena namuciryathA । balo vendrAzanihato nipapAta hataH kharaH ॥ 3-30-28
hk transliteration by Sanscript