Dear Sapna & Amitava,
This is pilosophy, please go to in depth meanings of the phrase, and you will discover that, this is what is happening the world over..
Tum Aye Ho Na Shabe Intazra Guzari Ha
Talash Mein Ha Sehar, Bar Bar Guzri Ha
With Regards and Best Wishes.
Dr. Shamim A. Hassan
Khobar Saudi Arabia