Ahmad ibn Hanbal, Musnad, V.2, page 442; Hakim Nishaburi, Al-Mustadrak, V.3, page 149; Khatib Baghdadi, Tarikh-e-Baghdad, V.7, page 144; Tabarani, Al-Mu’jam Al-Kabir, V.3, page 40; Ibn Kathir, Al-Bidaya wa'l-Nihaya, V.8, page 223; Muttaqi Hindi, Kanz al-Ummal, V.12, page 97.

It is narrated from Zaid ibn Arqam that he said: During the illness of the Messenger of Allah (s.a.w.a.) that led to his death, he graciously turned his face towards Ali, Fatimah, Hasan and Husain and said, “I am at war with the one who fights you and at peace with the one who makes peace with you.” Ibn Asaker, Tarikh Madinah-Damishq, V.14, page 157.

Also, refer to Jam'i as-Sahih (Tirmidhi, V.5, page 360) and Sunan Ibn-Majah (V.1, p.52); It is narrated from Abu Saeed Khudri who said: After marriage of Ali with Fatimah, the holy Prophet (s.a.w.a.) for forty days in the morning would come to Fatimah’s house and say: “I am earnestly at war with anyone who is at war with you and earnestly a friend to anyone who befriends you.” Ibn Shahin, Fazail Sayed’tun-Nisa, page 29.

And in Kanz al-Ummal, Zaid ibn Arqam testifies that the holy Prophet (s.a.w.a.) said to Ali, Fatima, Hasan, and Husain: “I am at war with whomever you are at war with and I am at peace with whomever you are at peace with.”

Muttaqi Hindi has narrated this tradition from a number of Ahle-Sunnah books. Refer to Kanz al-Ummah, V.13, page 640.