Reasons for the argument between Nishad and Maya over Mr. Nath:

1. Maya's suspicion: Maya suspects that Mr. Nath, their neighbor, is involved in some criminal activities. She has observed him behaving strangely, making secretive phone calls, and frequently receiving suspicious visitors. Maya's suspicion creates tension between her and Nishad.

2. Nishad's trust in Mr. Nath: On the other hand, Nishad does not believe Maya's suspicions about Mr. Nath. He considers him to be a kind and helpful person who is always ready to assist others. Nishad's trust in Mr. Nath's character causes him to dismiss Maya's concerns.

3. Differences in perception: Nishad and Maya have different perspectives on Mr. Nath's behavior. Maya's observations and intuition lead her to believe that he is involved in illegal activities, while Nishad's positive experiences with Mr. Nath make him reluctant to believe anything negative about their neighbor.

4. Lack of evidence: Maya's suspicion is based on circumstantial evidence and her gut feeling, rather than concrete proof. Nishad demands concrete evidence to support her claims, which further intensifies their argument.

5. Protectiveness and concern: Maya's suspicions about Mr. Nath's criminal activities stem from her concern for the safety and well-being of their community. She wants to protect others from potential harm. Nishad, on the other hand, feels that Maya is unnecessarily creating tension and drama without substantial evidence.

6. Communication breakdown: The argument between Nishad and Maya highlights a breakdown in communication. Maya struggles to convey her concerns effectively, and Nishad finds it challenging to understand the seriousness of the situation. This miscommunication deepens the conflict between them.

7. Resolving the argument: To resolve the argument, Nishad and Maya may need to find a middle ground. They should consider gathering more evidence to support Maya's suspicions or seek the help of authorities to investigate Mr. Nath discreetly. Open and respectful communication is essential for them to address their differences and reach a resolution.

In conclusion, the argument between Nishad and Maya over Mr. Nath arises due to Maya's suspicion of his involvement in criminal activities and Nishad's trust in Mr. Nath. Differences in perception, lack of evidence, protectiveness, and communication breakdown contribute to the intensity of their disagreement. Resolving the argument would require finding common ground and exploring appropriate steps to address Maya's concerns.