Valmiki Ramayana Sundara Kanda Sarga 9 Shloka 35
Original Shlokaपरिवृत्तेऽर्धरात्रे तु पाननिद्रावशं गतम्। क्रीडित्वोपरतं रात्रौ सुष्वाप बलवत्तदा।।5.9.35।।
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रात्रौ at night, क्रीडित्वा having sported, उपरतम् wearied, पाननिद्रावशं गतम् succumbed to drinks and sleep, तदा then, अर्धरात्रे when midnight, परिवृत्ते rolled away, बलवत् compelled, सुष्वाप to sleep.
Drinking and sporting until midnight, they had dropped off to sleeptired.