Iranian President Mahmoud Ahmadinejad said that the new UN sanctions imposed on Tehran on Wednesday should be "thrown in the dust bin," the ISNA news agency reported.
"These resolutions are not worth a dime for the Iranian nation," Ahmadinejad told ISNA in Tajikistan.
"I gave one of them (world powers) a message that the resolutions you issue are like a used hanky which should be thrown in the dust bin. They are not capable of hurting Iranians."
Ahmadinejad, under whose presidency Iran has doggedly pursued the nuclear programme said, "Those who have atomic bombs, have used them, stored them or threatened others with them, keep issuing resolutions against us under the pretext that Iran might build an atomic bomb in the future."
The UN Security Council slapped a fourth set of punitive measures on Iran Wednesday hoping to persuade the Islamic republic to curb its suspect nuclear programme by widening military and financial sanctions.
The vote in the 15-member council was 12 in favor of the US-drafted resolution, with Lebanon abstaining and Brazil and Turkey voting against.
World powers led by Washington suspect Tehran's nuclear drive is aimed at weapons. Iran denies the charge, saying it is pursuing nuclear technology purely for the peaceful goal of generating electricity.