Skandapurana 5.98.24

5.98.24

atha rājā'bhavadrāmaḥ sārvabhaumastataḥ param..
rāvaṇo yena durdharṣo nihato devakaṃṭakaḥ .. 24 ..

Then Rāma became the sovereign king after that, / by whom the unassailable Rāvaṇa, a thorn to the gods, was slain;