Valmiki Ramayana Ayodhya Kanda Sarga 14 Shloka 17
Original Shlokaत्वया सपुत्रया नैव कर्तव्या सलिलक्रिया। व्याहन्ताऽस्यशुभाचारे यदि रामाभिषेचनम्।।2.14.17।।
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अशुभाचारे O woman of inauspicious practices, रामाभिषेचनम् Rama's consecration, व्याहन्तासि यदि if you prevent, सपुत्रया along with your son, त्वया by you, सलिलक्रिया offering water to the dead, नैवकर्तव्या should not be done.
O woman of inauspicious practices, since you are obstructing Rama's coronation, you and your son shall not perform my funeral rite of offering water to the dead.