Hossain applied for bail nearly a month after his arrest at his Ipswich home. He is accused of attempting to bribe officials to stop police linking him and his family to Parvin's death in Bangladesh.
Parvin, an Australian-Bangladeshi dual national, was found dead by Bangladeshi police in September 2024, a day after the Australian Federal Police began investigating her disappearance.
Defence solicitor Torik Dib told the court Hossain faced an arrest warrant in Bangladesh and had no reason to risk fleeing overseas.
"There has been no formal extradition application ... because they have capital punishment," Dib said.
"He is only protected from extradition because he is in Australia, because we as a country deem it against human rights for someone to be executed."
Magistrate Tim Hishon acknowledged Hossain could not return to Bangladesh or other countries with the death penalty, such as Indonesia, but noted he could still flee elsewhere.
"He could be unlawfully in New Zealand working as a farm hand," Hishon said.
Dib said Hossain was an Australian citizen with deep connections to Queensland, including owning three plots of land and a house.
The Commonwealth prosecutor opposed bail, arguing Hossain was a risk of offending while on bail, interfering with witnesses and failing to reappear in court.
The court heard AFP investigators had tapped Hossain's phones and planted a listening device in his ute on suspicion he could be charged with murdering an Australian citizen overseas. Hossain was allegedly captured saying he had paid 100,000 Taka, worth about A$1170, and that "they want money".