Devibhagavatapurana 3.15.30

3.15.30

sapatnyai garalaṃ dattaṃ sapatnyā nṛpabhāryayā |
garbhanāśārthamuddiśya puraitadvai mayā śrutam ||

I heard also that in ancient times one queen gave poison to destroy the foetus in the womb of her rival wife. When the child came out of the womb, he was celebrated by the name of Sagara (with poison) in this earth.