First off, you have to travel to Tajikistan, then you must use your lips, tongue and vocal cords to pronounce the words "good" and "bye" in that order. Once you have done that you have said "good bye" in Tajikistan.
If you are wondering what a common salutation when parting ways in Tajikistan is, then you should first find out what languages are spoken in that country.
Assalom aleykum
it's Arabic word salam ualikom
good bye or bye
Aurevoir. A bientôt. But if you say "good bye" or "bye bye" everyone understands you.
"Good-bye."
bye
I Say Good-bye was created on 2001-11-07.
"Good-bye" in Cornish is "Dha weles".
La korn = Good bye or bye bye
Don't Say Good-Bye was created on 2009-06-24.
say bye bye
Hello=Hola Good-bye=Adiós
Good-bye, you say LA REVEDERE [la'-rehvehdehra] which means "see you soon" Good-bye, you say PA [pah] which means "good bye for ever"
Hie l'm a Zimbabwean if you want to say good-bye = Toonana THANK U.