Valmiki Ramayana Bala Kanda Sarga 70 Shloka 30
Original Shlokaद्वे चास्य भार्ये गर्भिण्यौ बभूवतुरिति श्रुतम्।।1.70.30।। एका गर्भविनाशाय सपत्न्यै सगरं ददौ।
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अस्य his, द्वे two, भार्ये wives, गर्भिण्यौ pregnant, बभूवतु: became, इति thus, श्रुतम् is known, एका one, गर्भविनाशाय to destroy the embryo, सपत्नयै the other wife, सगरम् poison mixed in food, ददौ gave.
It is said that his (Asita's) two wives were pregnant. One gave food mixed with poison to the other with the intention of destroying her embryo.