Zaha was the subject of a £12 million bid from Spurs late in the transfer window, which Parish previously described as "ridiculous," adding: "I can't imagine that they're serious."
And Parish reiterated on Wednesday that not even a nine-figure bid would have prised the 23-year-old from Selhurst Park, especially having already sold teammate Yannick Bolasie to Everton for more than twice what their London rivals were offering.
When asked by Talksport host Jim White if Zaha could have moved to White Hart Lane, Parish replied: "Daniel (Levy, the Tottenham chairman) is the best trader, probably, in football. And I get it, you wanna buy low and sell high - I get that.
"(But) I came on here and said we wouldn’t sell him for £100 million and I honestly wouldn’t have sold him for £100 million in that moment because it isn’t worth it: that close to the end of the transfer window; no replacement.
He added: "It wouldn’t have happened and hopefully it won’t happen for a long time yet."
After failing to land Zaha - whom a Daily Mirror report claimed was keen to play Champions League football under Spurs head coach Mauricio Pochettino - the north Londoners eventually bolstered their ranks with Marseille winger Georges-Kevin N'Koudou.
It is unclear if they will return for the Palace star, who has been on the Eagles' books for over a decade, barring an 18-month spell at Manchester United.
Ivory Coast-born Zaha also won both of his England caps during his first spell in south London.