Tirukkural 675: Modes of Action

Do an act after a due consideration of the (following) five, viz. money, means, time, execution and place.

Image of Satguru Sivaya Subramuniyaswami
Faithfulness in marriage means fidelity and much more. It includes mental faithfulness, non-flirtatiousness and modesty toward the opposite sex. A married man, for instance, should not hire a secretary who is more magnetic or more beautiful than his wife.
—Gurudeva