Arthashastra
शीघ्र अभियाने त्व् अमित्र आटविक अनभ्यन्तर कोपे च न मित्रं विद्यते ॥
In times of sudden expedition and on occasions of troubles from an enemy, a wild tribe, or local rebels, no friend can be trusted.
english translation
zIghra abhiyAne tv amitra ATavika anabhyantara kope ca na mitraM vidyate ॥
hk transliteration by Sanscript