"Mandela: Long Walk To Freedom" features Idris Elba in the title role and Naomie Harris as his wife Winnie. Its premiere was held here Wednesday in the presence of two of the movie's actors, Atandwa Kani and Terry Pheto.
The 71-year-old also recollected his experience of performing in South Africa over two decades back.
"'Mandela' the movie produced by dear friend Anant Singh from South Africa, and he and his team solely responsible through the kindness of Mr. Mandela to give us the permission to bring the very first Concert to South Africa at a time when Apartheid was just on its way out," Amitabh posted on his blog srbachchan.tumblr.com.
The 1991 concert was put together by Anant Singh.
Big B says its a "memorable trip", full of "incredible moments".
"What a memorable trip to Durban and Johannesburg during the time of the very first concert in South Africa in which we performed in 1990. Incredible moments, the warmth and the affection of the people of South Africa, their stance on matters that concerned them politically, generous in their praise and most dignified in their reception to me," he posted.