He is playing his first tournament since suffering serious injuries in a car accident in December 2022 that kept him out of last year's IPL as well as the 50-overs World Cup in India
BCB media manager Rabeed Imam told bdnews24.com that Mushfiq had injured his thumb during practice.
He was taken to the hospital for an x-ray.
Mushfiq led the Tigers to 105-run victory against Afghanistan in their opening game . He was adjudged Man of the Match for his 71 runs in the match against Afghanistan.
Bangladesh will take on Sri Lanka in their third match on Thursday at the Melbourne Cricket Ground.