"I'll stand by [you] but if you can't take the heat, get out of the kitchen."

"He [President Truman] used a version slightly nearer the one most often used nowadays, in 1949, after becoming president, when warning his staff not to concern themselves over criticism about their appointments:"

https://www.phrases.org.uk/meanings/get-out-of-the-kitchen.html

truman]used a version slightly nearer the one most often used nowadays, in 1949, after becoming president, when warning his staff not to concern themselves over criticism about their appointments:

"I'll stand by [you] but if you can't take the heat, get out of the kitchen."