Pakistan's vice-captain will lead his country in next month's tournament after regular skipper Inzamam-ul-Haq was banned for four ODIs.
After seeing a lifeline fall his way, Smith never looked back and went on to complete his 35th Test ton.
"The reason why I have refused the captaincy will be revealed afterwards," Younis told reporters in Lahore.
Steve Smith is the 15th player to go past the 10,000-run mark in Test cricket.
He might be serving an indefinite ban but Pakistan's former captain Younis Khan insists his career is not over and he wants to go out of international cricket on a high.
Afghanistan may be faced with some off-field distractions in Pakistan with Group B rivals England and South Africa being urged to boycott their matches.
It took chief selector Salahuddin Ahmed's intervention to convince an "upset" Younis Khan to take the field in the first one-dayer against Banglades,h as the batsman was furious after being questioned by an ICC investigating officer just ahead of the match.
Younis Khan produced a fine all-round performance to guide Pakistan to a battling three-wicket win over Zimbabwe.
Pakistan clinched their first ever series win in the Caribbean when they beat West Indies in a thrilling finish to the third Test in Dominica on Sunday, giving Younis Khan and Misbah-ul-Haq a perfect retirement present.
The Pakistan Cricket Board will announce on Monday whether Younis Khan will continue as captain of the Test and ODI sides or a new skipper will take over.
'Half the tournament we had lost when we announced the 15-member squad, and I am saying this from day one.'
Pakistan's senior batsman will miss the final Test against England to attend the funeral of his brother.
Mohammad Yousuf was named Pakistan captain for the Champions Trophy after Younis Khan said he does not want to lead the side.
Pressure got to Pakistan's young team as they slumped to a 50-run defeat by Sri Lanka in the first Test on Tuesday, said captain Younis Khan. 'It's all about pressure,' he noted after Pakistan crumbled from 71-2 to 117 all out in just 44.3 overs.
PCB sources said the Younis Khan episode had contributed to Shaharyar Khan stepping down.
Pakistan captain Younis Khan on Tuesday set a plethora of records on his way to an unbeaten 306 on the fourth day of the first Test against Sri Lanka at the National Stadium in Karachi.
Younis Khan's emotional plea for teams to tour Pakistan notwithstanding, spin great Shane Warne reckons the trouble-torn country is still not safe for the visitors.
Pakistan skipper Younis Khan said he would not tolerate the slur of match-fixing levelled against him and his teammates and would resign from the captain's job if he felt so.
The ICC's Anti-Corruption Unit officer Alan Peacock has reportedly questioned the two Pakistani players following claims by Shoaib Akhtar that he rejected offers to underperform in matches.
In a major move, the selectors inducted a number of uncapped players in the squad for the West Indies tour, including wicketkeeper Mohammad Salman, batsman Usman Salahuddin, all-rounder Hammad Azam and fast bowler Aizaz Cheema.
If winning the World Cup was not a shock enough for Pakistan fans, a bigger one followed when captain Younis Khan decided to call it quits right after winning the ICC World Twenty20.
Pakistan would do its best to India in the upcoming Champions Trophy but in case of a defeat, skipper Younis Khan has pleaded that the country accept the result sportingly and not suspect the intentions of the players.
Pakistan's highest Test run-getter and former captain, Younis Khan has said that had Bob Woolmer, the late national head coach, been alive the country's cricket would have reached great heights.
Zaheer, who scored 100 first class centuries in his career said that Babar needed to sit down and talk to his seniors.
Pakistan chief selector Iqbal Qasim has advised Younis Khan to concentrate on his individual performance in the coming matches as it was imperative for the captain to lead by example.
Pakistan captain Younis Khan on Sunday made a desperate plea to all the cricketing nations to resume tours to his country and stressed that cricket should be kept away from politics.
Pakistan must concentrate on controlling England's Ashes heroes in the forthcoming cricket series, says Pakistan vice-captain Younis Khan.
Pakistan have axed senior batsman Younis Khan for next month's One-day series against Australia in the United Arab Emirates as they announced their ODI and Twenty20 squads on Wednesday.
Former Pakistan captain Younis Khan will join one-day captain Shahid Afridi and head coach Waqar Younis in testifying before the ICC anti-corruption tribunal in Doha next week.
Former Pakistan captain Younis Khan has heaped praise on Junaid Khan, saying the young left-arm pacer has the traits of becoming someone like legendary seamer Wasim Akram.
Younis Khan notched his 17th Test hundred to guide Pakistan to a draw against South Africa on the final day of the first Test in Dubai, on Tuesday. Set 451 for victory after the visitors declared their second innings on 318 for two, Younus stroked an unbeaten 131 as Pakistan lost just one wicket on the fifth day to reach 343 for three.
The Pakistan vice captain is confident his team needs just one good match to recover from the devastating 4-1 one-day series loss to India.
Younis Khan on Thursday made it clear to the Pakistan Cricket Board that he would withdraw his resignation from the captain's post only if he is retained at the helm till the 2011 World Cup.
The duo have aggregated 1372 runs in just nine innings - in which they have batted together against India - at a mind blowing average of 171.50.
Embattled Pakistan captain Younis Khan on Wednesday said he will not quit the job to oblige detractors running a campaign against him following the team's humiliating Test and ODI series defeats in Sri Lanka. Younis said it is true that the team had not performed well in Sri Lanka but asserted that the team is still capable of winning the ICC Champions Trophy next month.
Half centuries from the two batsman proved crucial as Pakistan beat Sri Lanka by 33 runs in the Super Eight match at the Twenty20 World Cup.
