Canto 2 -
Ayodhyā-kāṇḍa
Chapter 26: Rāma Meets Sītā and Instructs Her
Text 2.26.36

स्पृशन्निव गजो हन्ति जिघ्रन्निव भुजङ्गमः।
स्मयन्निव नृपो हन्ति मानयन्निव दुर्जनः॥

spṛśann iva gajo hanti jighrann iva bhujaṅgamaḥ
smayann iva nṛpo hanti mānayann iva durjanaḥ

spṛśan = to touch; iva = while appearing; gajaḥ = an elephant; hanti = kills; jighran = to smell; iva = while appearing; bhujaṅgamaḥ = a snake [kills]; smayan = to smile; iva = while appearing; nṛpaḥ = a king; hanti = kills; mānayan = to praise; iva = while appearing; durjanaḥ = a wicked person [kills].

An elephant kills while appearing to touch. A snake [kills] while appearing to smell. A king kills while appearing to smile. A wicked person [kills] while appearing to praise.