《汉书·纪·文帝纪》
诏说： 前时曾诏遣列侯各回封国去，推辞而未能成行。
诏曰： 前日诏遣列侯之国，辞未行。
The imperial edict said: I had ordered the marquises to go back to their fiefdoms earlier, but they excused themselves and failed to carry it out.
<s>[INST] Kindly elucidate the central themes in this passage in English: 诏曰： 前日诏遣列侯之国，辞未行。 [/INST] The imperial edict said: I had ordered the marquises to go back to their fiefdoms earlier, but they excused themselves and failed to carry it out.</s>
Kindly elucidate the central themes in this passage in English: 诏曰： 前日诏遣列侯之国，辞未行。
user
The imperial edict said: I had ordered the marquises to go back to their fiefdoms earlier, but they excused themselves and failed to carry it out.
assistant