This Hindi song lyric 'Tu jo juda ho gayi, meri saza ho gayi' is indeed from the song 'Firta rahu dar badar' (typically written as 'Phirta hoon main dar badar') from the 1974 film 'Roti Kapda Aur Makaan'. The song is sung by Mukesh and expresses the pain of separation and wandering. The question correctly matches the opening lyric to its song.