"The march from a jus soli to a jus sanguinis conception of citizenship is also simultaneously a march from civic-nationalism to ethno-religious nationalism, from a universalist and inclusive form of nationalism to an exclusionary form that renders difference as graded hierarchy.
This is nothing less than a radical re-invention of the imagination of India that informed and inspired the freedom struggle and found embodiment in the Constitution."
https://www.theindiaforum.in/amp/article/faith-criterion-citizenship
Faith-based Citizenship
The Citizenship Amendment Bill and the pan-Indian National Register of Citizens mark a foundational shift in the Indian conception of citizenship, providing paths to citizenship for some and driving others on to paths to statelessness. The Indian idea of citizenship – as embodied in the Constitution and the law – is in the throes of a profound and radical metamorphosis. The twin instruments of this transformation are the National Register of Citizens (NRC) and the Citizenship Amendment Bill (CAB). If the former is carving out paths to statelessness for disfavoured groups, the latter is creating paths to citizenship for preferred groups. While the first is, despite the looming threat of its extension across India, presently limited to the state of Assam, the second is designed to be pan-Indian in its application.
Naveen Surendar 