This story is about Indrajit, the son of Rávana. One day Angada, the son of Báli, went to Rávana’s court to submit his credentials. Before he arrived the nineteen ministers of Rávana’s court had assumed the form of Rávana by using demonic spells. Only Indrajit, Rávana’s son, was in his actual form. These spells require enormous psychic concentration to be maintained. If one is swayed by anger or any other emotion concentration is lost and the spell stops working. In order to find the real Rávana, Angada knew he had to disturb the ministers’ concentration and force them back into their original form. So he addressed Indrajit provokingly,

“Indrajit mitá mora, Indrajit mitá
Vishati Rávan dekhi, vishati ki tor pitá?”

[“Indrajit, my dear friend,
I see twenty Rávanas.
Is every one your father?”]

The story goes that the nineteen ministers were infuriated by Angada’s insinuation, lost their mental concentration and returned to their original form. Angada was able to identify the real Rávana and presented his credentials to him.