First, consider checking official channels or streaming platforms that might have the movie available. Services like:
Sometimes offer movies with dual audio tracks. Download Interstellar -2014- Dual Audio -Hindi ...
For a safe and legal option:
You can purchase or rent "Interstellar" in HD, often with the option to buy a dubbed version or the original with subtitles. Sometimes offer movies with dual audio tracks
If it's not available on streaming platforms, your next option might be torrent sites. However, be cautious: You can purchase or rent "Interstellar" in HD,
Popular torrent sites (though not recommended due to risks):