Legislature cannot directly overrule a decision or make a direction as not binding on it

Declaring the Karnataka Religious Institutions and Charitable Endowments (Amendment) Act, 2011 and the Karnataka Religious Institutions and Charitable Endowments (Amendment) Act, 2012 discriminatory and violative of Constitutional Rights, the High Court held that if the law passed by a legislature is struck down by the Courts as being invalid for one or the other reason, it would be competent for the appropriate Legislature to cure the  said infirmity and pass a validating law so as to make the provisions of the said earlier law effective from the date when it was passed. But the changed or altered conditions should be such that the previous decision would not have been rendered by the Court if those conditions had existed at the time of declaring the law as invalid.

Article referred: http://blog.scconline.com/post/2015/12/04/legislature-cannot-directly-overrule-a-decision-or-make-a-direction-as-not-binding-on-it-but-has-power-to-make-the-decision-ineffective/