cut (someone) to the quick
to hurt someone's feelings very badly
The woman cut her friend to the quick when she criticized her new clothes.
Arvind Kejriwal joined IIT Kharagpur and did his B.Tech in Mechanical Engineering. Tata Steel hired him in 1989 to work as Mechanical Engineer in Jamshedpur. He worked there for around 3 years. He wanted to work in Social welfare department of Tata Steel but officials didnt allow him to do so. Thus finally he resigned from Tata Steel in 1992 and decided to prepare for IAS exams. In 1995, he cleared Civil Service Exams to join the public service.In 2000, he took a paid leave for 2 years to pursue higher education. He later joined in 2003 but resigned after 18 months with a zeal of doing something for nation. Everybody was quite shocked in his family and relatives when they came to know that this young man left the post of Joint Commissioner of Income tax in New Delhi.