Abu Dawud Book 34, Hadith Number 4494.

Chapter : If a man gives another poison to drink or eat will retaliation be taken on him or not.

Narated By Abu Hurairah : A Jewess presented a poisoned sheep to the Prophet (may peace be upon him), but the Prophet (may peace be upon him) did not interfere with her.

Abu Dawud said: The Jewess who poisoned the Prophet (may peace be upon him) was sistef of Marhab.