SHAFAQNA – Imam Ali (AS) advised Malik Ashtar by saying: Beware, beware; be very cautious of your enemy after making peace with them. Because sometimes the enemy gets close in order to find you unaware. Therefore, have foresight and accuse your optimism (in another words, be prudent and do not be too optimistic of your enemy’s intention) [1].
[1] Nahjul Balaghah, Letter Number 53.