If you have a local copy of the movie and need a standalone .srt file, several dedicated subtitle databases host them. When searching, look for "Masaan 2015 English SRT":
One of the most popular subtitle repositories. Search for "Masaan" and look for entries marked with an English flag. User ratings and comments will tell you if the file matches popular video rips.
Move both files into the same folder on your computer.
There are several ways to download Masaan English subtitles, and we'll explore some of the most popular methods below: