《国语·鲁语·臧文仲说僖公请免卫成》
从此以后晋国遣使到鲁国聘问，规格要比其他诸侯高一等，送的礼物也比和鲁国同等爵位的要好。
自是晋聘于鲁，加于诸侯一等，爵同，厚其好货。
From then on, when Jin sent envoys to Lu to ask about its well-being, the specifications were one grade higher than those of other vassal states, and the gifts were better than those of the same rank as Lu.