Valmiki Ramayana 5.40.9
असह्यानि न दुःखानि वाचश्च हृदयच्छिदः ।राक्षसीनां सुघोराणां त्वत्कृते मर्षयाम्यहम्॥
asahyāni na duḥkhāni vācaśca hṛdayacchidaḥ |rākṣasīnāṃ sughorāṇāṃ tvatkṛte marṣayāmyaham ||
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book