Shiva Purana
तदेव रावणसुतं हत्वा सबहुराक्षसम् ॥ स महोपद्रवं चक्रे महोतिस्तत्र निर्भयः ॥ २२॥
At the same time he killed Rāvaṇa’s son also along with many Rākṣasas. That fearless monkey of great exploits wrought a havoc there.
english translation
tadeva rAvaNasutaM hatvA sabahurAkSasam ॥ sa mahopadravaM cakre mahotistatra nirbhayaH ॥ 22॥
hk transliteration by Sanscript