Valmiki Ramayana Ayodhya Kanda Sarga 62 Shloka 15
Original Shlokaशोको नाशयते धैर्यं शोको नाशयते श्रुतम्। शोको नाशयते सर्वं नास्ति शोकसमो रिपुः।।2.62.15।।
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शोकः grief, धैर्यम् patience, नाशयते destroys, शोकः grief, श्रुतम् knowledge of the scriptures, नाशयते destroys, शोकः grief, सर्वम् everything, नाशयते destroys, शोकसमः equal to grief, रिपुः enemy, नास्ति not there.
Grief destroys fortitude. Grief destroys knowledge of the scriptures, grief destroys everything. There is no enemy equal to grief.