The bird alighteth not on the spread net when it beholds another bird in the snare. Take warning by the misfortunes of others, that others may not take example from you.
SaadiHe who, when he hath the power, doeth not good, when he loses the means will suffer distress. There is not a more unfortunate wretch than the oppressor; for in the day of adversity nobody is his friend.
Saadi