Adios Amigos

Best song of 'celebratory' farewell that I can think of:

abhee alawidaa mat kaho dosato
n jaane kahaa fir mulaakaat ho

beete huye lamahon kee kasak saath to hogee
khwaabon hee mein ho chaahe, mulaakaat to hogee

ye pyaar mein doobee huyee rangeen fajaayen
ye chehare, ye najare, ye jawaan rut ye hawaayen
hum jaaye kahee in kee mahak saath to hogee

foolon kee tarah dil mein basaaye huye rakhanaa
yaadon ke charaagon ko jalaaye huye rakhanaa
lanbaa hain safar is mein kahee raat to hogee

ye saath gujaare huye, lamahaata kee daulat
jajabaat kee daulat ye khayaalaat kee daulat
kuchh paas naa ho paas ye saugaat to hogee

(from the film Nikaah; cut paste from geetmanjusha.com so pardon the spelling)