What changes were made in "Ins. by s. 2, ibid. (w.e.f. 17-10-1973)"?
No changes were made in "Ins. by s. 2, ibid. (w.e.f. 17-10-1973)". The sentence states that it was inserted by the Constitution (Thirty-first Amendment) Act, 1973, and no further amendments or revisions are mentioned in the context provided.