Canto 3 -
Araṇya-kāṇḍa
Chapter 37: Mārīca Advises Rāvaṇa
Text 3.37.22

जीवितं च सुखं चैव राज्यं चैव सुदुर्लभम्।
यदीच्छसि चिरं भोक्तुं मा कृथा रामविप्रियम्॥

jīvitaṁ ca sukhaṁ caiva rājyaṁ caiva sudurlabham
yadīcchasi ciraṁ bhoktuṁ mā kṛthā rāma-vipriyam

jīvitam ca = [your] life; sukham ca eva = happiness; rājyam = kingdom; ca eva = and; sudurlabham = that is very rarely attained; yadi = if; icchasi = you want; ciram = for a long time; bhoktum = to enjoy; kṛthāḥ = don’t do; rāma-vipriyam = that which displeases Rāma.

If you want to enjoy [your] life, happiness and kingdom that is very rarely attained for a long time, don’t do that which displeases Rāma.