Downloading or distributing copyrighted material from such sites is illegal in most jurisdictions, including India, under the Copyright Act 1957.
Any download from Filmyzilla is a violation of the Copyright Act, 1957 (India) and similar laws worldwide. You are not “just watching an old show”—you are participating in revenue theft from the creators and legal distributors. Br Chopra Mahabharat All Episodes Download Filmyzilla