Here's a transcript, as best I can figure:

Omar.

Ay yo.

Omar! Omar's coming yo! Omar's coming!
Omar's coming yo. Did you hear that?
Get that shit down. Omar's coming! Omar's coming!
Come on. Get out of here yo! Omar's coming!
Omar! Put that shit down. I said Omar's coming!
Somebody in trouble now. Come on, let's go.

Ayyy yo!
Ayyyyyyyyy yo!
Ayyyyyyyyyyyyyyyy yo!
Y'all need to open this door, man, before I huff and puff.
Come on now, by the hairs of your chinny-chin-chin.

Omar you best roll out.
We up in here with a MAC-10.

Oh I thinks not Tyrell, I thinks not.
Y'all might need to think this through and stop wasting my time.
'Cause Omar can come back tomorrow.
And the next day.
And the next day.
And I will put a bullet in all y'all behind what happened right now, you heard?
Fair enough

From Season 1, Episode 9 of The Wire. Omar goes to the pit and gets Tyrell gives up the drugs, which he later trades with Prop Joe for Avon Barksdale's pager number.