Bageshwar Dham Sarkar
How does attachment make a person lose the sense of right and wrong?
Do not let attachment blind your judgment
Dhritarashtra became blind in the eyes of knowledge too, through attachment to his son. Vidur ji advised him not to be so blind in moh (attachment) that he gave up dharma and adharma, truth and untruth.
Vidur ji explained: Maharaj, do not become so blind in attachment to your son that you give up dharma and adharma, give up truth and untruth.