This house seems to have a story behind it.
彼は曰く付きの品を安く買った。
He bought an item with a history at a low price.
according to ...; ... says
Used to quote or report what someone said, often in formal or literary contexts. Functions like 'so-and-so says' or 'according to so-and-so'. Typically follows a name or source.
先生曰く、この問題は試験に出るそうだ。
According to the teacher, this problem will appear on the exam.
彼曰く、それは誤解だとのことです。
He says it's a misunderstanding.
According to the doctor, he's already fine.
It seems there's some story behind this vase.