Heard this beautiful song sung by Rabbi Shergil a few days back. Although I liked its music but could not understand it fully so I looked  for its meaning on the net. Finally I got the lyrics. Its one of the most wonderful songs I have heard in recent times. The song conveys  deep and spritual meaning. The lyrics  are written  by a Sufi Saint, Bulleh Shah. Its english translation will help understand the meaning.

Bulla ki jaana main kaun, Bulla ki jaana main kaun, Bulla ki jaana main kaun, Bulla ki jaana main kaun.
Na main moman vich maseetan, Na main vich kufar dian reetan, Na main pakan vich paleetan.
Na main andar bed kitaban, Na main rehnda phaang sharaban, Na main rehnda mast kharaban.
Na main shadi na ghamnaki, Na main vich paleetan pakeen, Na main aaabi na main khaki.
Na main aatish na main paun, Bulla ki jana main kaun, Bulla ki jana main kaun, Bulla ki jana main kaun, Bulla ki jana main kaun.
Na main arabi na lahori, Na main hindi shehar Nagaori, Na hindu na turk pashauri.
Na main bhet mazhab de paya, Na main aadam hawwa jaya, Na koi apna naam dharaya.
Avval aakhar aap nu jana, Na koi dooja hor pacchana, Mai ton na koi hor syana.
Bulle shah kharha hai kaun, Bulla ki jaana main kaun, Bulla ki jaana main kaun, Bulla ki jaana main kaun, Bulla ki jaana main kaun
Na main moosa na pharoah, Na main jagan na vich saun, Na main aatish na main paun, Na main rahnda vich Nadaun, Na main baitthan na vich bhaun, Bulle shah kharha hai kaun
Bulla ki jaana main kaun...... Oooooo..... Bulla ki jaana main kaun

English Translation!

PS. I have posted the video too for those who havent heard the song.. The credit goes  to Indigo Iris for sending in tips to  post a video on a blog! Thanks Iris!! Cheers!