Here is a comprehensive breakdown of Bajirao Mastani’s Tamil version, its musical success, and the modern context surrounding its online availability. The Cultural Phenomenon of Bajirao Mastani in Tamil Nadu
If you want, I can:
Check periodically, as Hotstar often rotates Bhansali productions in its library. Tamil subtitles are typically available.
Isaimini Bajirao Mastani Tamil: A Detailed Guide to Downloading and Streaming