Arthashastra
अग्नये स्वाहा, सोमाय स्वाहा, भूः स्वाहा भुवः स्वाहा ॥
oblation to Agni, oblation to soma, oblation to the earth, and oblation to the atmosphere.
english translation
agnaye svAhA, somAya svAhA, bhUH svAhA bhuvaH svAhA ॥
hk transliteration by Sanscript