Srimad Bhagavatam Canto 07, Chapter 10, Text 36

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.
Srimad Bhagavatam Canto 07, Chapter 10, Text 35
Srimad Bhagavatam Canto 07, Chapter 10, Text 37