Uniform Civil Code (UCC) derives inspiration from the second part of Article 14 of The Constitution of India which deals with Equal Protection of Law for all. Indian State is not mere Police State but Welfare State also by the implication of constitutional provisions which oblises India to think beyond maintenance of order. Indian State is constitutionally obligated (under preamble, part III and part IV of The Constitution of India) to secure social & economic Justice, legal protection and legal empowerment, then none has personal law or private law in restraining State from discharging its constitutional obligations. Equality before Law for all limits Indian State to ensuring Rule of Law only, while Equal Protection of Law requires Indian State to secure not only social & economic Justice but legal protection and legal empowerment as well. And for that, State is to do positive acts.
If any class of people has been facing human rights violations, Indian State is oblised here to strive for stopping such human rights violations by way of special provisions, special enactments, special treatment, special safeguards, legal protection and legal empowerment. Then this is no more an issue that such human rights violations are supported or inspired by any social, cultural or religious practices. Modern State has respect for social, cultural and religious practices to the extent they don’t contravene human rights standard. Human Rights standard is now universally accepted and is indeed modern decency, behaviour and way of life and decides which practice is fair, just and reasonable and so which law, fair, just and reasonable.
Indian State has to act as social reformer and social activist and crusader for human rights (Civil Liberties as mentioned in part III of The Indian Constitution) and a just negotiator for social & economic Justice (part IV of The Indian Constitution).
Part III of The Indian Constitution prescribes for Human Rights standard and every practice of a person, class or group of people is to be tested by the same, though justification and inspiration of this role of State is given in the preamble and Part IV of The Indian Constitution. Article 21 of The Indian Constitution is a residuary provision for Human Rights Standard and of course for Social & Economic Justice as well. Human Rights Standard is not anti-thesis to the idea of Social & Economic Justice rather complementary and supplementary to each other. Indeed Article 21 of The Indian Constitution is inspirational provision and Article 14 of the Indian Constitution, empowering provision for Uniform Civil Code (UCC).