"I promise infidel Nasara (Christians) and apostates more beheading on my hands, my death is a rumor," he tweeted on his Twitter page.
Jihadist social network accounts affiliated with the group had circulated Abu Salama's death.
An Egyptian young man fighting for the Islamic State in Syria reportedly committed a suicide attack at the Kurdish-Syrian city of Kobane.
Yakan joined the militant group, which controls large swathes of Syria and Iraq, on 21 November. He posted a tweet before what was rumored to be his death in a suicide attack.
“Persist, resist and unite… fight against Allah’s enemies, the worshippers of the cross, Jews, apostate transgressors and their armies. Behead them with your swords, smash their heads with your bullets and blow up their bodies with your belts,” he said in the tweet.
The Islamic State, which seeks to establish a Caliph rule in the Arab region, has reportedly succeeded in controlling large parts of the city located on the Syrian-Turkish borders despite air strikes by a US-led military coalition and resistance by Kurdish fighters.
Six suicide bombing by the movement over the past few days have left several killed, also forcing thousands out of the city.
Egypt branded IS as a terrorist entity on Sunday. Early November, security authorities said they had arrested a number of returnees from Iraq and Syria who were feared to have links to the group.
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Edited translation from Al-Masry Al-Youm http://www.egyptindependent.com//news/egyptian-fighting-islamic-state-denies-rumors-his-death