न हि विवाह नन्तरं वरपरीक्षा क्रियतैति न्यायः

It takes its origin from the uselessness of minutely observing a bridegroom after the marriage is over. This should be done before. It is used to denote that the consideration of propriety or otherwise of a course should be carefully made before it is adopted. After thought in this concern is of no use whatever. DONE BELOW