You can find the full lyrics for the soulful Sufi-style ballad "O Re Piya" from the movie Aaja Nachle at: O Re Piya Lyrics & Sargam - Scribd
The song is celebrated for its spiritual depth and is often cited as a milestone where classical and commercial music met, featuring vocals by Rahat Fateh Ali Khan and music composed by Salim-Sulaiman.