Ibn Abi al-Dunya also recorded it in The Brotherhood (61/16), through Abu al-Muhayya, from Mansur, with this same chain.
I say: This is an authentic chain of transmission; all its narrators are trustworthy and are among Muslim’s narrators. Al-Hafiz was silent regarding it in Fath al-Bari (1/62), though he attributed it to al-Nasa’i. However, the wording, “and that he hates for Allah’s sake,” is a singular addition. The hadith has been transmitted from Anas through several routes in a similar wording: “that a person loves another only for Allah’s sake”; they do not mention hatred.
Al-Bukhari (16 and 21) and Muslim (1/48) recorded it through two routes; Muslim added a third, and al-Nasa’i and others a fourth. All of them narrated it from Anas without mentioning hatred.
However, I found two further routes containing this addition, which reassured me regarding it; thus, it is no longer anomalous on account of it:
The first is from Saʿid ibn Abi Maryam, who said: Musa ibn Yaʿqub al-Zamʿi reported to us that Abu al-Huwayrith, ʿAbd al-Rahman ibn Muʿawiyah, informed him that Nuʿaym ibn al-Mujmir informed him that Anas ibn Malik informed him of it.
Al-Tabarani recorded it in his three Muʿjams: al-Kabir (The Large) (1/224/724), al-Awsat (The Middle) (5/469/4902), and al-Saghir (The Small) (p. 150—Hind). He said: “No one narrated it from Abu al-Huwayrith except Musa; Ibn Abi Maryam alone transmitted it.”
I say: He is trustworthy, but al-Zamʿi and Abu al-Huwayrith are weak in retention, as I explained in al-Rawd al-Nadir (no. 52); thus, they may serve as corroborative support.
The other route is reported by Saʿid ibn Mansur: Abu Maʿshar reported to us, from Muhammad ibn Qays, from Anas ibn Malik, with it.