However, the senior batsman is expected back in time for the first of four Tests against England at Lord's starting on July 6 - a series de Villiers is set to miss as he takes a break from the longest global format.
Having bundled out South Africa for 191, two-time champions India cruised home with 12 overs to spare at The Oval.
Quinton de Kock's 53 was the only score of any substance from the spineless South Africans, who had three men run out in a wretched performance.
The quick said: "We're not thinking about the semi-final right now". I think you saw it in this game. It has nothing to do with the energy or the intensity or the belief in the team. We'll go to Birmingham, practice over there and then start thinking about it.
South Africa have a history of chocking in major events but de Villiers didn't believe that it his team's mental weakness that dogged them. They knew they couldn't afford to bowl for wickets with the two slips, so they went back to a defensive plan.
Now Sri Lanka will hope De Silva can follow the lead of opening batsman Gunathilaka, who made an impressive 76 in Sri Lanka's surprisingly comfortable seven-wicket win on Thursday. "No looking back. Always room for improvement, always small points you can improve on, can't rest on your laurels".
"Not a lot of people believe me but I feel (we're) pretty close (to a championship)". "I still care deeply about the environment that I spent so much time building as a player, and it hurts to see such an unrecognisable South Africa performance", Smith wrote in his column for the ICC's official website. We had a couple of sessions here, and we are very much prepared for that.
Despite his bad luck here, he's far from finished as a batsman.
It was a nerveless performance from India, who had come under fire after failing to defend a total of 321 in their heavy defeat against Sri Lanka. Amidst this, he announced his eagerness to continue with the captain's role as he believes he is a "good captain".
"Because I'm a good captain".
But Hafeez, a veteran of 187 ODIs, told reporters in Cardiff on Sunday: "To be honest, I m always a fan of that tag, that we re an unpredictable team".
The win saw India go through to the top four of the ICC Champions Trophy as Bumrah clinched his first MoM award in one-day worldwide cricket.
The cliche that you can never be sure which Pakistan team will turn up is one the current side have embraced at this tournament.
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