Hadith No: 1
Al-Dhahabi - Siyar A'lam al-Nubala'
And among the lesser companions - al-Hasan ibn Ali ibn Abi Talib
Volume: (3) - Page Number: (257)
[The text is lengthy, so only the relevant excerpt is provided here]
- .... Ahmad in his Musnad narrated: Talid ibn Sulayman narrated to us, Abu al-Juhhaf narrated to us, Abu Hazim narrated to us from Abu Huraira: The Prophet (peace be upon him and his holy progeny) looked at Ali, Fatimah, Hasan, and Husayn and said: "I am at war with whoever battles you and at peace with whoever is at peace with you."

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Reference: Seyar A'laam al-Nobalaa Book 3

Hadith No: 2
Al-Dhahabi - Siyar A'lam al-Nubalai
Volume 11 - Abu Ghassan
Part: (10) - Page Number: (432)
- Ahmad ibn Abd al-Rahman ibn Yusuf al-Muqri narrated to us, saying: Muhammad ibn Ishaq narrated to us, saying: Yahya ibn Mahmoud narrated to us, saying: Fatimah bint Abdullah ibn Aqil narrated to us, saying: Muhammad ibn Abdullah narrated to us, saying: Abu al-Qasim al-Tabarani narrated to us, saying: Muhammad ibn Ahmad ibn al-Nadr al-Azdiy narrated to us, saying: Malik ibn Ishaq al-Nahdi narrated to us, saying: Isbat ibn Nasr narrated to us, from al-Suddi, from Sabih, the freedman of Umm Salamah, from Zayd ibn Arqam, that the Prophet (peace be upon him and his holy progeny) said to Ali, Fatimah, Hasan, and Husayn: "I am at war with those who wage war on you and at peace with those who are at peace with you."

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Reference: Seyar A'laam al-Nobalaa Book 10

Hadith No: 3
Al-Dhahabi - Mizan al-I'tidal fi Naqd al-Rijal - Letter Alif
712 - Asbat ibn Nasr al-Hamdani
Volume: (1) - Page Number: (175/176)
712 - Asbat ibn Nasr al-Hamdani narrated from Samak and Isma'il al-Sindi, and Abu Ghassan al-Nahdi and Amr ibn Hammad and a group narrated from him. Ibn Ma'in regarded him as trustworthy, Ahmad was hesitant about him, and Abu Nu'aym weakened him. Al-Nasa'i said: "Asbat is not like al-Baqawi." Asbat narrated from al-Suddi from Sabih, the freedman of Umm Salamah, from Zayd ibn Arqam that the Prophet (peace be upon him and his holy progeny) said to Ali, Fatimah, Hasan, and Husayn: 'I am at war with those who wage war on you and at peace with those who are at peace with you,' a narration that Asbat was unique in.

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Reference: Meezaan al Aietedal fi Naqd al Rijal Book 1