Iran says it has no plans to pull out of a $22bn gas deal with India in the wake of a disagreement over Tehran's nuclear programme.
Iran insists it wants civilian nuclear power, not weapons
Delhi had voted on Saturday for Iran's nuclear plans to be referred to the UN Security Council.
Top Iranian official Ali Aghamohammadi denied a report in India's Hindu newspaper the gas deal was in doubt.
Under the accord, India would import 5m tonnes of liquefied natural gas a year for 25 years.
On Tuesday Iran had said it would reconsider economic co-operation with countries such as India which had supported the UN nuclear move.
The Hindu reported that Iran had "informed" India that the gas deal had been scrapped.
However, the BBC's Frances Harrison in Tehran says Mr Aghamohammadi, secretary of Iran's Supreme National Security Council, said Iran had no plans to withdraw from the gas agreement.
He said: "We have had good, deep relations with India in many fields and regional affairs and their behaviour at the IAEA [International Atomic Energy Agency] was strange and we didn't expect them to vote against Iran."
But he added: "We don't want to review our current relations with India and their vote against Iran doesn't affect the gas project."
Iran's ambassador in Delhi conveyed Tehran's disappointment over the vote face to face in a meeting with India's foreign secretary.
India would import 5m tonnes of Iranian gas a year for 25 years
An Indian foreign ministry spokesman said Delhi had explained the "background to our decision to vote in favour of the resolution at the IAEA".
But he said the ambassador did not give any indication Iran was planning to "review its long-standing and extensive co-operation with India".
The Indian government has maintained since Saturday that it did not come under pressure to back the vote from the US, which has thanked Delhi for its support.
India says the IAEA resolution is consistent with Delhi's stated position on Iran and is in no way linked to a recent landmark India-US nuclear accord.
The US accuses Iran of seeking nuclear arms, which Tehran denies. Iran says it wants nuclear technology purely for peaceful production of energy and has called the resolution illegal.
India's government is under attack both from the opposition and its left-wing allies for its decision to side with the West and vote against Iran.
On Wednesday morning, Indian Prime Minister Manmohan Singh met key left-wing allies upset at the government's vote at the IAEA.