Abu Dawud said: The Jewess who poisoned the Prophet (ﷺ) was sister of Marhab.
In-book : Book 41, Hadith 16
English translation : Book 40, Hadith 4494
41. Types of Blood-Wit (Kitab Al-Diyat)
باب فِيمَنْ سَقَى رَجُلاً سَمًّا أَوْ أَطْعَمَهُ فَمَاتَ أَيُقَادُ مِنْهُ