Wiz Khalifa was arrested early Sunday morning at an airport in Texas … after a “green leafy substance” was found during a TSA check.
The “Black and Yellow” rapper was flying from El Paso to Dallas when TSA officials discovered the green stuff … according to law enforcement sources.   Wiz was taken into custody and  turned over to local police.
We’re told cops concluded the obvious — the leafy substance was marijuana — and that’s against the law in those parts … so he was arrested.
Cops say he was in possession of 5 grams of weed.
Wiz clearly isn’t that concerned … he tweeted a jail selfie.