Since it was his first offence of the season under the IPL's Code of Conduct relating to minimum over-rate offences, Rohit was fined $20,000.
"This was Rohit's first offence of the season under the IPL's Code of Conduct relating to minimum over-rate offences, so he has been fined USD 20,000," an official release stated in the IPL's official website.
Mumbai Indians have failed to win a single match in the first leg of the IPL in UAE that concluded on Wednesday.
The defending champions slumped to their fifth straight defeat in the cash-rich tournament after losing the contest by 15 runs against Sunrisers Hyderabad.
They now need to win most of their remaining nine matches in the Indian leg to make it to the knockout stage of the IPL-7.
Image: Rohit Sharma
Photograph: BCCI
'I am a bowler and I know what I am capable of doing'
We are getting into the groove now: Dhawan
CSK look to continue winning run as IPL arrives in India
IPL-7: The BEST performances from the UAE leg
Hyderabad hand Mumbai fifth straight defeat