Valmiki Ramayana Kishkindha Kanda Sarga 63 Shloka 7
Original Shlokaतस्या विलपितं श्रुत्वा तौ च सीताविनाकृतौ।।4.63.7।। न मे दशरथस्नेहात्पुत्रेणोत्पादितं प्रियम्।
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तस्याः her, विलपितम् wailing, श्रुत्वा on hearing also, तौ both (Rama and Lakshmna), सीताविनाकृतौ separated from Sita, मे for me, दशरथस्नेहात् in view of my friendship with Dasaratha, पुत्रेण by my son, प्रियम् pleased, न उत्पादितम् not created.
'Even after hearing the wailing of Sita, knowing that both (Rama and Lakshmana) are separated from her and considering my friendship with Dasaratha, I felt displeased with my son (as he did not make an attempt to rescue her)'.