Sai's Test For His Pupils

Sai asks his pupils to come have a look at his mirror and see what mistakes they have made in life. Two of his pupils see their mistakes in the mirror. When Sai asks Mohan to come have a look at the mirror, Mohan tells him that what's the use of that when he already knows he has made mistakes in life and what is a human being if he has never made any mistakes in his life.