Sri Lanka T20I Captain Wanindu Hasaranga Suspended for Two Games and Fined for his Outburst at Umpire

Gurbaz and Hasaranga's brawl with the Umpire -

Following his violation of the ICC's Code of Conduct during the third T20 International in Dambulla, Afghanistan's wicketkeeper-batter Rahmanullah Gurbaz was fined fifteen percent of his match fee and Sri Lanka's skipper Wanindu Hasaranga was suspended for two matches.
Hasaranga has been banned, according to an announcement from the organization. The spin bowling all-round player racked up five demerit points in 24 months, including his most recent violation of the ICC Code of Conduct.

Sri Lanka's T20I skipper and second-ranked T20I bowler on the ICC Men's Player Rankings, Wanindu Hasaranga, has been presented with a two-match suspension after his total demerit points reached five within 24 months following his latest breach of the ICC Code of Conduct, for which he received a 50 percent fine and three demerit points
~the ICC said in a statement

Hasaranga confronted on-field umpire Lyndon Hanibal after Wednesday's third and final T20 International in which he was displeased with the umpire's decision of giving a full-toss bowl to no ball.

Violated 'Code of Conduct' on the field

Thus, it was decided that Hasaranga had violated Article 2.13 of the ICC Code of Conduct for Players and Player Support Staff. This article describes "personal abuse of a Player, Player Support Personnel, Umpire or Match Referee during an International Match".
According to the ICC, Hasaranga's five demerit points convert to two suspension points.

This means he will either get a ban for one Test match or two ODIs or T20Is, whichever comes first, for the player or player support personnel. Consequently, Hasaranga will be suspended from participating in Sri Lanka's first two T20Is against Bangladesh next month.
~the ICC said

Afghanistan's batsman Gurbaz also received a penalty in the same match, Gurbaz was fined for violating Level 1 of the ICC Code of Conduct by ignoring an umpire's instructions during an international match (item 2.4).
As a result, Gurbaz now has one penalty point added to his disciplinary record his second offense in 24 months, and has accrued two demerit points.

The sanction was imposed on Rahmanullah for altering the grip of his bat on the field despite repeated warnings against doing so.
~the ICC said

The ICC said that both players have accepted their mistake and have obliged to follow the ICC's instructions that have charged them guilty.

The charges were brought forth by on-field umpires Lyndon Hannibal and Raveendra Wimalasiri, third umpire Ruchira Palliyaguruge, and fourth umpire Ranmore Martinez
~the ICC said

Sri Lanka won the series by 2-1 and Hasaranga was awarded with the Player of the Series award for his commendable performance.