 जागर्तव्यमतन्द्रिभ्यामद्यप्रभृति रात्रिषु।योगक्षेमौ हि सीताया वर्तेते लक्ष्मणावयोः।। 
  O Lakshmana, from now on we must be sleeplessly vigilant at night. The welfare and safety of Sita depend on us both. 