《资治通鉴·周纪·周纪四》
貂勃出使楚国，楚王予以热情款待，几个月不放他回去。
貂勃使楚，楚王受而觞之，数月不反。
Diao Bo was sent to Chu as an envoy. The King of Chu treated him with great warmth and kept him there for several months without allowing him to return.