Iran's parliament is set to review the landmark nuclear deal reached with world powers last week.
Foreign Minister Mohammad Javad Zarif, who headed the Iranian negotiating team during the talks in Vienna, sent the text of the agreement to the house, state media reported.
Under Iran's constitution, parliament has a right to reject any deal - even one negotiated by the foreign ministry.
However, it is not clear whether politicians will vote on the deal or whether they will simply discuss it and possibly express concerns about it.
On Monday, the UN Security Council unanimously endorsed the deal to rein in Iran's nuclear programme and authorised measures leading to the end of UN sanctions.