SB 7.10.36
punas ca vipra-sapena
raksasau tau babhuvatuh
kumbhakarna-dasa-grivau
hatau tau rama-vikramaih
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
Being cursed by the brahmanas, the same two associates took birth again as Kumbhakarna and the ten-headed Ravana. These two Raksasas were killed by Lord Ramacandra’s extraordinary power.