19th June, England v South Africa, 09:30 GMT
"This is my last Twenty20 game (for Pakistan), so I am retiring from T20 internationals," Younus said after the game.
"I am now 34, I am old for this kind of cricket. The good thing is we have a couple of good youngsters like Shahzaib (Hasan) and Ahmad Shahzad."
Younus finishes his Twenty20 International career with two half-centuries from 22 matches with a batting strike-rate of 124.85, 432 runs in all and three wickets.
He also urged countries to return to touring Pakistan.
"I think it was a gift for all our nation," Younus added. "Everybody must come to Pakistan, we need a home Test series. How can we attract the youngsters? Players must come to Pakistan."
Teams have been reluctant to tour due to security concerns, which were amplified when terrorists attacked the Sri Lankan convoy during a Test series in March.
© Cricket World 2009