Marshall was admitted to the intensive care unit of Broward General, but his agent, Kenny McGuire, said in a statement he was expected to make a full recovery.
"This is a very difficult time for Brandon and his family, thankfully he will make a full recovery. We simply ask during this time we respect his privacy," said McGuire.
The South Florida Sun Sentinel said Saturday that Broward County deputies responded to a call at the Marshalls' home in Southwest Ranches and found the 26-year-old receiver bleeding.
According to the arrest report, Marshall told the deputies he had cut himself on a broken glass vase; however his wife, Michi Nogami-Marshall, said she had stabbed him with a kitchen knife in self-defense. Mrs. Marshall was booked on a charge of aggravated battery with a deadly weapon and held on $7,500 bond.
The Dolphins told the Sun Sentinel they had no details on the incident. The newspaper said Marshall has had run-ins with the law in the past due to domestic violence incidents.