It sounds like you're referring to the phrase (यार गद्दार), which translates from Hindi/Urdu as "Friend (is a) Traitor" — a classic theme of betrayal in Bollywood and Punjabi cinema.
You called me yaar Over chai at the roadside stall, Our boots stuck in the post-rain mud of '94. Your shadow walked beside mine through narrow lanes— We swore on cassette labels: Tere Mere Sapne . yaar gaddar 1994
Chal, gaddar. Even the rats in the grain market knew your face before I did. Dil tod ke tu hass di, Meri raaton ko bass di, Kasam tere yaar ki, Tu nikla gaddar – 1994. (You broke my heart and laughed, You turned my nights into ash, By the oath of friendship, You turned out a traitor – 1994.) It sounds like you're referring to the phrase
Now 1994 is just a sepia filter For lessons that sting like cheap whiskey: Some yaars are just future enemies Wearing borrowed watches and your favorite line— "Tera mera saath, janam janam." Chal, gaddar
Then the gaddari came. Not with a dagger—with a signed paper. A missing file from the godown. A girl's laugh from the wrong balcony. You sold my name for a fleeting chair In a company that folded by winter.