"I am really happy today that finally my action is clear and all the hard work has paid dividends. I have no intention to retire and I want to play for three to four years more for Pakistan," Ajmal told reporters in Lahore.
Ajmal, 37, said he had set himself a target of returning in April-May when the national team tours Bangladesh.
"But if an emergency arises and I am required then I am ready to also go to the World Cup but my preference is to ready myself for a comeback against Bangladesh," he said.
Ajmal admitted he went through a tough time after being suspended from bowling in international cricket last September by the ICC because of an illegal bowling action.
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"It was really hard but I never gave up and even with my modified action I was confident I can play again," he said.
"I can understand their concern but I have worked hard on improvising my deliveries and I have developed a strong carrom ball and some other deliveries. I have started playing outdoors and it is good to see I still retain the same bounce, pace and zip in my bowling," he explained.