Iran on Tuesday rejected an asylum offer by Brazilian President Luiz Inacio Lula da Silva for a woman condemned to death by stoning for adultery, DPA reported.
Lula said Saturday that Sakineh Mohammadi-Ashtiani - whose case has provoked international condemnation - would be welcome in Brazil if her presence in Iran is a problem for "my friend (President Mahmoud) Ahmadinejad."
"Mr Lula is person who sets great value on humanitarian issues but in this case a crime has definitely been committed which the judiciary is following," Foreign Ministry spokesman Ramin Mehmanparast told a press conference.
"I think if the case is clarified to Mr Lula, the issue will be done," he said.
The US government also called on Iran to accept Brazil's offer and described stoning in the 21st century as a barbaric act which should be outlawed.
Iran's judiciary said the 43-year-old Mohammadi-Ashtiani, was not only convicted of adultery but also of killing her husband in 2006.
But it has delayed her sentence indefinitely.
Stoning is imposed mainly as punishment for offences related to illegitimate sex, such as adultery.
Judicial officials ordered the courts to halt stoning sentences due to negative international impact in favour of alternative punishments, but some provincial courts continue the practice.
During the stoning, men are buried up to their waist and women up to their necks and then stones are thrown against their head and body until they die. But if a person manages to escape from the hole, they are acquitted and free to go.