"The issur d’oraita applies only to eating meat and milk that were cooked together; Chazal extended the issur to eating them together even if they were not cooked together. This is also true for meat of a chayah and of poultry." (source)

"You might say, half-jokingly, that parking on a double-yellow line or sitting in your father's chair are issurim m'doraita." (source)