Valmiki Ramayana 6.52.10

राक्षसा मथिताः केचिद्वानरैर्जितकाशिभिः ।ववमू रुधिरं केचिन्मुखै रुधिरभोजनाः॥

rākṣasā mathitāḥ kecidvānarairjitakāśibhiḥ |vavamū rudhiraṃ kecinmukhai rudhirabhojanāḥ ||

Our plain-language meaning of this verse is waiting for scholar review.