Arthashastra
विपर्यये खर उष्ट्र अश्व बल प्रायो देशम् अल्प वर्ष पङ्कम् ॥
Against a country of the reverse description, i.e., which as little rain and muddy water, one should march with an army mostly composed of asses, camels, and horses.
english translation
viparyaye khara uSTra azva bala prAyo dezam alpa varSa paGkam ॥
hk transliteration by Sanscript