Wow, it is been a long long time for I was searching for this song. The song is in urdu by the great Faiz Ahmed Faiz. It is the sound track of the greatest drama "Dhoop Kinaray". You can listen to the song using the link below:
And here are the lyrics of the song:
Last night your faded memory came to me
As in the wilderness spring comes quietly,
As, slowly, in the desert, moves the breeze,
As, to a sick man, without cause, comes peace.