The pair met for the sixth time this year and 39th time overall in the final of the ATP World Tour Masters on Monday evening, where Djokovic prevailed in straight sets.
Djokovic has said that he and Nadal bring the best out of each other.
"We push each other to the limit," The Herald quotes Djokovic as saying.
"We make each other better players. We make each other work harder on our games, especially when we play against each other. It's always a huge challenge.
"I see him more than my mum actually."
The world number two will represent Serbia in the final of the Davis Cup against the Czech Republic this weekend.