Valmiki Ramayana Yuddha Kanda Sarga 8 Shloka 18
Original Shlokaएवंचेदुपसर्पेतामनयंरामलक्ष्मणौ । अवश्यमपनीतेनजहतामेवजीवितम् ।।6.8.18।।
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रामलक्ष्मणौ: Rama and Lakshmana, एवम् that way, अनयम् distressed, उपसर्पेतांयदि: they will succumb, अवश्यमेव: certainly, अपनीतेन: cunning ways, जीवितम्: life, जहतामेव: giving up.
"When Rama and Lakshmana are distressed that way, they would certainly succumb to our cunning ways and give up life."