The History Of Shumbh And Nishumbh

The winner of the competition among the demons, Shumbh and Nishumbh were so powerful that all the other Asurs are confused as to how they gained so much power. So, Asur Guru Shukracharya tells them the history of Shumbh and Nishumbh. How is Devraj Indra involved with the history of Shumbh and Nishumbh?