The Pakistan Cricket Board said on Monday that team manager, Talat Ali had held a hearing at which Umar pleaded guilty and also apologised for his actions.
The selection committee and team management including head coach, Mickey Arthur is under fire after the disastrous five-match series against Australia, but Mani said the time was not right for making any changes.
Usman Khawaja, Shaun Marsh and Glenn Maxwell smashed fifties as Australia beat Pakistan by 20 runs in the final ODI.
Abid Ali hit 112 off 119 balls and Mohammad Rizwan smashed 104 off 102 deliveries before Australia came back to restrict Pakistan to 271-8 in their chase of 278 and pick up their fourth straight win in the five-match series.
The 25-year-old bowler joins Jhye Richardson in returning home early as the latter injured his shoulder in Sharjah.
The national selectors and team management have come in for criticism for resting six key players from the ongoing series against Australia.
Aaron Finch missed out on an opportunity to become the first Australian to hit three consecutive ODI hundreds but his 90 off 136 balls anchored the world champions to 266-6.
Finch was happy his team continued its fine ODI form from India, where it won the series 3-2 earlier this month.
Australia captain Aaron Finch said that he is ready to bat at whatever number the team needs him in the upcoming 2019 World Cup.
Afridi was also critical of the decision to rest Sarfaraz and other key players for the 'home' series, slated to be held in the UAE.
Pakistan have also opted to rest Shadab Khan, Fakhar Zaman, Babar Zaman, Hasan Ali and Shaheen Shah Afridi in the series against Australia.
The one-year bans handed to Steven Smith and David Warner will end on March 29 and they will be eligible to play at least one ODI against Pakistan in Austrlia's five-match series.
After much delay the Pakistan Cricket Board on Sunday finally announced that the one-day series would be played entirely in the United Arab Emirates (UAE) from March 22 to 31.
A PCB official said that the series could be rescheduled as the Australians are keen to play it as close to the World Cup as possible.
Australia finished its disappointing tour without a win as it also lost the Test series 1-0 after narrowly escaping with a draw in the first test.
Ahmed compared the left-hander to world's greatest fielder Jonty Rhodes, claiming that this kind of run-out has not even been pulled off by the former Proteas fielder.
The victory ensured top-ranked Pakistan notches its 10th successive Twenty20 series victory under Ahmed.
The image showing the rival captains Aaron Finch and Sarfraz Ahmed holding the trophy before the series began was circulated widely on social media.
Wasim dismantled Australia's top order with his left-arm spin in his first three overs to dismiss the visitors for 89 in 16.5 overs.
Abbas' current average of 15.64 is the best for any player in the last 100 years and the fourth-best overall.
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