“One, who try to teach the fool disciple; nourish and protect the wicked wife and keeping the close relationship with the depressed one, will be at pain regardless of being Pandit (Wiser).”
Chanakya is trying to highlight the importance of fruitless acts which may cause you the pain here.
The fool person described here is about the dumbness of the disciple but this is more about the unwillingness to change oneself and negligence towards the acquisition of the knowledge surely gives the pain to one’s teacher or Guru because if one who is not willing to learn, how could anyone teach to oneself. It will just increase the pain of the person who tries to teach disciple but he can’t because disciple doesn’t want strive for it which will fill the heart of even very wise person with guilty of not teaching the disciple properly.
The wicked wife, who shows no love, dedication and sacrifice for the household then surely she will cause a pain to even a wise householder. The love comes with care, dedication with commitment and sacrifice with empathy. If wife doesn’t care about the family, how family will survive as the woman can do multitasking and she was considered the mother goddess of the house in ancient India. If she doesn’t have commitment towards the home for nurturing the family then how can family be happy and grow it should be grown. If she is not willing to forego her personal passions for family good then how can she will understand the value of controlling the streamlining passions for the family good which will eventually be her fortune too. Absence of these important qualities for cohabitation will lead the wise person’s house to the insensitive cohabitation and eventually cause intense pain to even wise person.
The depressed person mostly spreads the depression as the personal filled with negativity and no hopes. He doesn’t trust himself or someone else. Helping the depressed one with material things like money and food does not last for long until internal transformation happen which is hope and blissfulness. If one stays with the depressed one the repetitive negativity will affect the wise person too. Constantly being in contact with such a person will lead to initial few random negative thoughts then he starts to contemplate on those negative thoughts which prevent the person to think in the positive perspective of the matter. This state of mind leads a wise person to the depression and hence pain.