He even went on Barbara Walters and admitted slapping his wife.
From Wikipedia:
Accusations of abuse
In her autobiography My Nine Lives, as well as in subsequent interviews on radio and in print, Diane Cilento claimed that Connery had beaten her on several occasions - Connery vehemently denied the accusations.[15]
He caused an uproar in a December 1987 interview with Barbara Walters in which he said it was okay for a man to slap a woman with limited force, assuming that it was required to calm her down or "keep her in line".[16]
The interview with Walters referenced remarks Connery had made in a November 1965 interview with Playboy magazine on the set of Thunderball. In Vanity Fair in 1993 he said: "There are women who take it to the wire. That's what they are looking for, the ultimate confrontation. They want a smack."
So it's true. He did slap his wife. Nasser Sean Connery, shame on you.