Valmiki Ramayana Kishkindha Kanda Sarga 2 Shloka 23

वाली Vali, कृत्येषु in his actions, मेधावी wise, बहुदर्शिनः they have great vision, राजानः kings, परहन्तारः they kill enemies, भवन्ति will be, प्राकृतैः by ordinary ones, नरैः by men, ते to you, ज्ञेयाः they should be known

'Vali is wise in his actions. Kings employ many strategies to annihilate their enemies. Our gullible individuals should be able to detect them.