Arthashastra
हस्ति यन्त्र शकट गर्भ कुन्त प्रास हाटक वेणु शल्यवद् हस्ति बलस्य प्रतिबलम् ॥
The army which possesses elephants, machines, sakatagarbha (?), Kunta (a wooden rod), prása (a weapon, 24 inches long, with two handles), Kharvataka (?), bamboo sticks, and iron sticks is the army to oppose an army of elephants.
english translation
hasti yantra zakaTa garbha kunta prAsa hATaka veNu zalyavad hasti balasya pratibalam ॥
hk transliteration by Sanscript