This video from the commemoration in South Africa after the death of Nelson Mandela says about itself:
Mandela‘s fellow inmate gives emotional speech
15 December 2013
Fighting back tears, Ahmed Kathrada, who was jailed with Mandela on the Robben Island and is a family friend, said the last time he saw Mandela was when the anti-apartheid hero was fighting for his life in hospital. Kathrada said he met Mandela 67 years ago, and was saddened to see that he had become a “shadow of his former self”, but spoke highly of his campaign against racial segregation.
Today, veteran anti-apartheid fighter Ahmed Kathrada himself has died. See also here.
This video from South Africa says about itself:
Zenani Mandela pays tribute to Ahmed Kathrada
28 March 2017