Arthashastra
अत्युष्ण उपक्षीणे काले हस्ति बल प्रायो यायात् ॥
When the weather is free from heat, one should march with an army mostly composed of elephants.
english translation
atyuSNa upakSINe kAle hasti bala prAyo yAyAt ॥
hk transliteration by Sanscript