《北史·列传·卷六十五》
五品以上官员的妻妾不许改嫁，从此开始。
五品已上妻妾不得改醮，始于此也。
Since then, the wives and concubines of officials above the fifth rank have not been allowed to remarry.
<s>[INST] Kindly elucidate the central themes in this passage in English: 五品已上妻妾不得改醮，始于此也。 [/INST] Since then, the wives and concubines of officials above the fifth rank have not been allowed to remarry.</s>
Kindly elucidate the central themes in this passage in English: 五品已上妻妾不得改醮，始于此也。
user
Since then, the wives and concubines of officials above the fifth rank have not been allowed to remarry.
assistant