Hari Singh is a character from the story "The Thief's Story" by Ruskin Bond. In the story, Hari Singh steals a purse containing Rs. 500 from a rich man's house. But later, he realizes his mistake and decides to put the money back. Here's how he did it:

Planning
Hari Singh decides to put the money back because he feels guilty about stealing. He also realizes that the money belongs to someone else and he has no right to keep it. So, he makes a plan to return the money to the rich man's house without getting caught.

Execution
Hari Singh waits until nightfall and then goes to the rich man's house. He climbs over the wall and enters the house. He then goes to the room where he had stolen the purse from. He finds the purse and puts the money back in it. He also leaves a note apologizing for his mistake.

Escape
Hari Singh knows that he could get caught if he stays in the house for too long. So, he quickly leaves the house and climbs over the wall. He then runs away from the house as fast as he can.

Conclusion
Hari Singh successfully puts the money back without getting caught. He also apologizes for his mistake by leaving a note. This shows that he is a good person who realizes his mistake and tries to correct it.