Since some of you are Ustad of old songs collection..may be you could help me find this song.. i have no clue about the movie and singer..i just know the song..and i fall for it each time I listen to it.. NA YAY CHAND HOGA NA TARAY RAHEIN GAY MAGAR HUM HAMESHA TUMARE RAHEIN GAY.. I think Nagis and Guru Dutt was in it.. not sure :-(