Which Article of the Indian Constitution reiterates that kind of an equality which shall promote access to justice for all by creating equal opportunity in the light of legal aid?

Article 39-A

As pointed out by Granville Austin, the portions of the Constitution detailing the fundamental and directive principles of state policy are meant for social revolution. The revolution intends to bring about social justice based on equality. The wording of Article 39-A reiterates that kind of an equality which shall promote access to justice for all by creating equal opportunity. That this constitutional guarantee that was often violated than observed is visible in many of the cases brought before the courts including the apex court.