To pass away before accomplishing one's goals or fulfilling one's life's wishes; to die with regrets.

to provide weapons to thieves and food to bandits; to inadvertently help one's enemies by providing them with resources or tools

to harbor hatred or entertain a grudge; to have a gnawing regret; to be filled with resentment

(idiom) to give grain to bandits; to provide the enemy with resources, especially unintentionally, and thus become their unwitting tool. Often used in the phrase [[借贼兵，赍盗粮|借賊兵，齎盜糧|jie4 zei2 bing1 ji1 dao4 liang2]]