《左传·襄公·襄公十五年》
子罕把美玉放在自己的乡里，让玉工为他雕琢，卖出去，使献玉的人富有以后，然后让他回到家里。
子罕寘诸其里，使玉人为之攻之，富而后使复其所。
Zihan placed the jade in his own village, had it carved by a jade craftsman, sold it, and made the man who offered the jade rich, and then let him return home.