This is one of the two parts of the famous couplet by the well known Urdu poet Dagh Dehlavi 'Urdu Hai Jis Ka Nam Hameen Jante Hain Dagh, Sare Jahan Men Dhoom Hamari Zuban Ki Hai (Only we know the thing called Urdu. Our language (Urdu) is famous in all the worlds.)My mohter tongue is Urdu. I love it. It is very sweet language.