Manny Pacquiao has hit back at criticism from Floyd Mayweather.
Mayweather and Pacquiao fought back in 2015 when Mayweather - now 44 - won by decision against the Filipino.
While Mayweather retired in 2017 with an unbeaten record and a 50th professional victory over UFC fighter Conor McGregor, the Filipino, 42, continued to fight while building up a political career back in his home country.
‘Money’ has continued to entertain and earn in exhibition fights, but Pacquiao remains a professional and next fights on August 21 against IBF and WBC welterweight champion Errol Spence Jr.
"Pacquiao at his age , which is sad, has to fight," Mayweather said after his fight with Logan Paul.
"I’m financially set, and I want to make everybody hear this. You’re going to hear a lot of people say ‘Floyd needed to do this’, no, I’m well off.
"Every property that I have is paid for, my jet is paid for, all my cars are paid for, I own billion-dollar buildings, I own so much property, I’ve steadily invested in many different things. I’m invested in the tech world, I’ve made a lot of smart investments."
Pacquiao has now spoken to Power & Play, and BoxingScene.com reported his retort to his erstwhile rival.
"If I’m fighting for the money, then I would have picked some scrub to fight,” Pacquiao said.
"Why would I try to fight an undefeated fighter if I’m chasing the paycheck? This is a real fight. I fight because this is my passion. I love beating undefeated fighters and bringing honor to my country.
"I’m not like some other guys who are in it just for the money. Some other fighters challenge non-boxers just to get paid. I want to fight. I want to challenge the best."