Musannaf Ibn Abi Shaybah 34354 — Reports on al-Hasan and al-Husayn

Sayyiduna Zayd bin Arqam (may Allah be pleased with him) said that the Prophet (peace and blessings be upon him) said to Sayyidah Fatimah (may Allah be pleased with her), Sayyiduna al-Hasan (may Allah be pleased with him) and Sayyiduna al-Husayn (may Allah be pleased with him): "I am at war with whoever is at war with you, and I am at peace with whoever is at peace with you."