Valmiki Ramayana Sundara Kanda Sarga 15 Shloka 53
Original Shlokaदुष्करं कृतवान्रामो हीनो यदनया प्रभुः। धारयत्यात्मनो देहं न शोकेनावसीदति।।5.15.53।।
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प्रभुः lord, रामः Rama, अनया with her, हीनः separated, आत्मनः his, देहम् body, धारयति इति यत् held in this way, शोकेन with grief, न अवसीदति is not perishing, दुष्करम् a task (difficult), कृतवान् accomplished.
"Lord Rama had accomplished a difficult task in sustaining the body this way without allowing it to sink and perish during separation from her.