《史记·三十世家·绛侯周勃世家》
您受到丰厚的赏赐，处在尊贵的地位，这样受宠，时间长了将会有灾祸降到您的身上。 周勃害怕了，自己也感到危险，于是就辞职，请求归还相印。
居月馀，人或说勃曰： 君既诛诸吕，立代王，威震天下，而君受厚赏，处尊位，以宠，久之即祸及身矣。 勃惧，亦自危，乃谢请归相印。
You have been rewarded with rich rewards and are in a noble position. Such favor will eventually bring disaster to you. Zhou Bo was afraid and felt danger himself, so he resigned and asked to return the Xiangyin.