South Africa have endured "dark days" and their 2-0 sweep in India reflects their new mindset, said Proteas captain Temba Bavuma after his team completed a memorable series victory in Guwahati on Wednesday.

Despite being the reigning world champions, few expected South Africa to dominate India in the way they did - winning the series opener in Kolkata inside three days before beating the hosts by 408 runs in the first-ever test at Guwahati's Barsapara Cricket Stadium.

"It's massive," Bavuma said at the presentation ceremony.

"These are the type of things that we're working towards and dreaming of. It's not every day where you get to think that you can come to India and walk away with a two-nil series win.

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