Valmiki Ramayana 2.4.23
तस्मात्त्वयादप्रभृति निशेयं नियतात्मना ।सह वध्वोपवस्तव्या दर्भप्रस्तरशायिना॥
tasmāttvayādaprabhṛti niśeyaṃ niyatātmanā |saha vadhvopavastavyā darbhaprastaraśāyinā ||
Our plain-language meaning of this verse is waiting for scholar review.