Tirukkural 589: King & Spies

Let a king employ spies so that one may have no knowledge of the other; and when the information of three agrees together, let him receive it.

Image of Satguru Sivaya Subramuniyaswami
There is another way to show remorse for misdeeds. That is by performing seva, religious service, for persons you have wronged. Give them gifts, cook them food.
—Gurudeva