Rayners bagged a brace after coming off the bench, complementing Marcelo Allende’s opener and cancelling out Bradley Grobler’s goal for Babina Noko.
“We’re in the moment where you need to be very brave to play football, you cannot play with a fear or respect, restrain, you cannot play tide up, you need to play with passion, love, energy and just enjoy," Cardoso told SuperSport TV.
“And I think the players in the first half obviously didn’t enjoy the game to score and that’s the nature of Sundowns here it comes from the joy of the pleasure so released the mind and play the football you have to express otherwise you won’t be able to as you want and we have to be.
“Iqraam had a not so good moment, we all know, he knows, but he knows we trust and trust is shown in the right moment.
"So, instead we stick together, we knew the right moment would appear and he had to be ready.
"I’m so happy for the team and him also, for Saleng that comes in such a difficult moment and for everybody of course."
The victory keeps Sundowns second in the league and level on points with leaders Orlando Pirates.