It is narrated from Sayyiduna Ka'b bin Malik (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) forbade those who set out to Ibn Abi al-Huqayq to kill him from killing women and children.
Hadith Referenceالمعجم الكبير للطبراني / باب الكاف / 16196