Musannaf Ibn Abi Shaybah

Hazrat Thabit, may Allah have mercy on him, narrates that Hazrat Abu Bakr bin Anas, may Allah have mercy on him, said: Hazrat Zaid bin Arqam, may Allah be pleased with him, wrote a letter to Hazrat Anas, may Allah be pleased with him, offering condolences for his child and wife who were martyred who were martyred on the day of Harrah. In his letter, he wrote: And I give you glad tidings from Allah which I heard the Messenger of Allah (ﷺ) say. He (may Allah be pleased with him) said: O Allah! O Allah! Forgive the Ansar, and their children, and their grandchildren, and the women of the Ansar, and the women of their children, and the women of their grandchildren.