Afridi congratulated arch-rivals India and Bangladesh for setting up a date in the summit clash of the continental Twenty20 tournament.
"I want to congratulate India and Bangladesh for qualifying for the final. We made too many mistakes. It wasn't a good total, but the bowlers did superbly," Afridi said at the post-match presentation.
Afridi said Pakistan will have to come up with a "special" performance in the upcoming ICC World Twenty20.
The Pakistan skipper said they want to end the tournament on ahigh note with a win over Sri Lanka in the inconsequential round-robin match.
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"Sri Lanka is an important game, a win there will be good for our morale," Afridi said.
Bangladesh captain Mashrafe Mortaza termed the win a big achievement for his side.
"It's a big won for us, this was like a semi-final. I told the boys to just grab it, because we knew there would be plenty of such matches in the future," he said.
"There was a bit of pressure in the middle, but we coped well. Final will be another pressure game, the trick is to just back each other. It's a pleasure for us to play at home, thanks to the crowd for coming out in supporting us. Hopefully they'll continue to do that," Mortaza said.
Left-handed opener Soumya Sarkar was adjudeged man of the Match for his solid 48.