The Prophet ﷺ came to Saad bin Ubada, who brought bread and oil, and he ate. Then the Prophet ﷺ said, "May those who are fasting break their fast with you, may the righteous eat your food, and may the angels send blessings upon you."
أن النبي ﷺ جاء إلى سعد بن عبادة، فجاء بخبز وزيت، فأكل، ثم قال النبي ﷺ: أفطر عندكم الصائمون، وأكل طعامكم الأبرار، وصلت عليكم الملائكة.
Abu Dawud (3854) narrated it from Makhlad bin Khalid, who said, Abdul-Razzaq narrated to us, Mamar informed us, from Thabit, from Anas, and he related it. It is also in Musnaf Abdul-Razzaq (7907), and from him Imam Ahmad narrated it (12406) with an added story, and Thabit was uncertain whether he heard it from Anas or someone else. He said, the Messenger of Allah ﷺ sought permission to enter upon Saad bin Ubada and said, "Peace be upon you and the mercy of Allah." Saad said, and upon you be peace and the mercy of Allah, but the Prophet did not hear him until he had greeted him three times, and Saad returned the greeting three times, but they did not hear each other. So the Prophet turned back, and Saad followed after him and said, "O Messenger of Allah, by my father and mother, I did not utter a single greeting except that it reached my ear, and I did return your greeting, but you did not hear me. I wanted to gain as much of your greeting and its blessing as possible." Then he brought him into the house and offered him some raisins, and the Prophet of Allah ﷺ ate. When he finished, he said, (then he mentioned the supplication).Jafar bin Sulayman followed him in narrating it, transmitting it from Thabit, from Anas, without the uncertainty. Bayhaqi (7/287) narrated it through this route, similar to the hadith of Abdul-Razzaq. The hadith has other chains of transmission, and this is the most sahih of them, and Nawawi declared it sahih in al-Adhkar.As for what was reported from Abdullah bin Zubayr, that he said, "The Messenger of Allah ﷺ broke his fast at Saad's house and said, 'The fasting have broken their fast at your place, the righteous have eaten your food, and the angels have prayed for you.'" This is daif. Ibn Majah (1747) narrated it from Hisham bin Ammar, who said, Saeed bin Yahya Lakhmi narrated to us, who said, Muhammad bin Amr narrated to us, from Musab bin Thabit, from Abdullah bin Zubayr. Ibn Hibban also related it in his Sahih (5296), from Husayn bin Idris Ansari, from Hisham bin Ammar, in the same manner.Its chain is daif because of Musab bin Thabit, who is Musab bin Abdullah bin Zubayr bin Awwam Asadi. Ahmad, Ibn Main, Ibn Saad, and Daraqutni all declared him daif. Abu Hatim said, he is truthful, but makes many errors, and is not strong.I say, perhaps he erred and made the hadith part of the musnad of his grandfather Abdullah bin Zubayr, when it actually belongs to the musnad of Anas bin Malik. Busiri likewise declared it daif on this basis in Zawaid bin Majah.Ibn Hibban said in al-Majruhin, "His hadith is objectionable, being among those who transmit uniquely objectionable reports attributed to well-known narrators. When this became frequent from him, his hadith deserved to be avoided." He also mentioned him in al-Thiqat (7/478) and said, "I have included him among the daif narrators, and he is one of those concerning whom I sought Allah's guidance." End of quote.