Mahabharata 1.138.15

शयनेषु परार्ध्येषु ये पुरा वारणावतेनाधिजग्मुस्तदा निद्रां तेऽद्य सुप्ता महीतले

śayaneṣu parārdhyeṣu ye purā vāraṇāvatenādhijagmustadā nidrāṃ te'dya suptā mahītale

Our plain-language meaning of this verse is waiting for scholar review.