Valmiki Ramayana 7.16.20
किं त्विदानीं मया शक्यं हन्तुं त्वां हे निशाचर ।न हन्तव्यो हतस्त्वं हि पूर्वमेव स्वकर्मभिः॥
kiṃ tvidānīṃ mayā śakyaṃ hantuṃ tvāṃ he niśācara |na hantavyo hatastvaṃ hi pūrvameva svakarmabhiḥ ||
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book