Canto 3 -
Araṇya-kāṇḍa
Chapter 12: Agastya Requests Rāma to Protect the Sages
Text 3.12.37

सुखं स्वप महाबाहो ससीतः सहलक्ष्मणः।
रविरस्तंगतः सौम्य सन्ध्याकालोऽप्युपागमत्॥

sukhaṁ svapa mahā-bāho sasītaḥ saha-lakṣmaṇaḥ
ravir astaṁ gataḥ saumya sandhyā-kālo ’py upāgamat

sukham = happily; svapa = sleep; mahā-bāho = O mighty-armed; sa-sītaḥ = with Sītā; saha-lakṣmaṇaḥ = and Lakṣmaṇa; raviḥ = the sun; astam gataḥ = has set; saumya = and gentle Rāma; sandhyā-kālaḥ = [and] the time for sandhyā-vandana; api = also; upāgamat = has arrived.

O mighty-armed and gentle Rāma, sleep happily with Sītā and Lakṣmaṇa. The sun has set [and] the time for sandhyā-vandana has also arrived.