This is a good chain of transmission. Its narrators are trustworthy and are among Muslim’s narrators, apart from Muhammad ibn al-Ashʿath, whom Ibn Hibban declared trustworthy. A number of scholars narrated from him, and he was a senior Successor.
The present hadith is corroborated by a narration from Anas with the wording:
“Indeed, the Jews envy you for the greeting of peace and for saying Amin.”
692 — “Indeed, the Jews envy you for the greeting of peace and for saying Amin.”
Abu Nuʿaym recorded it in Hadiths of the Shuyukhs of Abu al-Qasim al-Asamm (35/1), al-Khatib in History (11/43), and al-Diyaʾ al-Maqdisi in al-Mukhtarah (f. 45/1), by way of Ibrahim ibn Ishaq al-Harbi: Abu Zafar narrated to us; Sulayman ibn al-Mughirah narrated to us from Thabit, from Anas, that the Messenger of Allah, peace and blessings be upon him, said it.
Al-Maqdisi said: “Abu Zafar’s name was Abd al-Salam ibn Mutahhar ibn Hisam ibn Masak ibn Zalim ibn Shaytan al-Azdi al-Basri. Al-Bukhari and Abu Dawud narrated from him.”
I say: The remaining narrators in the chain are trustworthy; it is therefore authentic.
693 — “There are two dawns: a dawn at which food becomes prohibited and prayer becomes permissible, and a dawn at which prayer becomes prohibited and food becomes permissible.”
Ibn Khuzaymah recorded it in his Sahih (1/52/2), and al-Hakim recorded it from him (1/425), by way of Abu Ahmad al-Zubayri, who narrated to us from Sufyan, from Ibn Jurayj, from Ataʾ, from Ibn Abbas, that the Messenger of Allah, peace and blessings be upon him, said it. Ibn Khuzaymah said: