Valmiki Ramayana Yuddha Kanda Sarga 93 Shloka 57
Original Shlokaमन्येतुहृदयंतस्याःकौसल्यायाःफलिष्यति । एकपुत्रायदापुत्रंविनष्टंश्रोष्यतेयुधि ।।6.93.57।।
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एकपुत्रा only son, यदा this, पुत्रम् son, युधि in battle, विनष्टम् perished, श्रोष्यते will think, तस्याः her, कौसल्यायाः Kausalya's, हृदयम् heart, फलिष्यति break, मन्ये I think
'Kausalya will think her only son has been killed in the battle. I think her heart would break'.