Mahabharata 3.271.27

3.271.27

śataśo nairṛtānvanyā jaghnurvanyāṃśca nairṛtāḥ |
nairṛtāstatra vadhyante prāyaśo na tu vānarāḥ || 27 ||

And that mighty monkey, Nala, also, with a large mass of rock, crushed Promathin, that other younger brother of Dushana. The deadly struggle, however, between the soldiers of Rama and Ravana, rushing against one another, instead of coming to an end even after this, raged on as before. And hundreds of Rakshasas were slain by the denizens of the forest, while many of the latter were slain by the former. The loss, however, in killed, of the Rakshasas was far greater than that of the monkeys.