Canto 2 -
Ayodhyā-kāṇḍa
Chapter 53: Rāma Requests Lakṣmaṇa to Return to Ayodhyā
Text 2.53.3

जागर्तव्यमतन्द्रिभ्यामद्यप्रभृति रात्रिषु।
योगक्षेमं हि सीताया वर्तते लक्ष्मणावयोः॥

jāgartavyam atandribhyām adya-prabhṛti rātriṣu
yoga-kṣemaṁ hi sītāyā vartate lakṣmaṇāvayoḥ

jāgartavyam = awake; atandribhyām = we should be attentively; adya-prabhṛti = from today; rātriṣu = at night; yoga-kṣemam = protection; hi = for; sītāyāḥ = Sītā’s; vartate = depends; lakṣmaṇa = Lakṣmaṇa; āvayoḥ = on Us.

Lakṣmaṇa, we should be attentively awake at night, for Sītā’s protection depends on Us from today.