Mahabharata 1.98.2

1.98.2

punaśca dhanurādāya mahāstrāṇi pramuñcatā |
nirdagdhaṃ kṣatramasakṛdrathena jayatā mahīm || 2 ||

"Bhishma continued, 'In olden days, Rama, the son of Jamadagni, in anger at the death of his father, slew with his battle axe the king of the Haihayas. And Rama, by cutting off the thousand arms of Arjuna (the Haihaya king), achieved a most difficult feat in the world. Not content with this, he set out on his chariot for the conquest of the world, and taking up his bow he cast around his mighty weapons to exterminate the Kshatriyas. And the illustrious scion of Bhrigu's race, by means of his swift arrows annihilated the Kshatriya tribe one and twenty times.