Former India spinner Ravichandran Ashwin opined that people doubting Virat Kohli's abilities may have prompted his aggressive celebration following centuries in India-South Africa ODI series. "Message must have gone inside Kohli that 'Are you people doubting my ability?'...He must have taken it to heart," Ashwin said. "Kohli is telling himself, 'You doubted me. I did it'," he added.