While he was in the house, afraid, Aas bin Waail Sahmi, Abu Amr, came to him wearing a striped cloak and a shirt hemmed with silk. He was from the clan of Sahm, who were our allies in the days before Islam.He asked him, "What is the matter with you?"Umar replied, "Your people claim they will kill me if I accept Islam."Aas said, "No one has any way to reach you." Once he had said that, Umar felt safe.Aas then went out and found people flooding through the valley like a torrent. He asked, "Where are you all headed?"They said, "We want this son of Khattab, the one who has abandoned his religion."Aas said, "No one has any way to reach him." So the people turned back.
حدثني يحيى بن سليمان قال حدثني ابن وهب قال حدثني عمر بن محمد قال
بينما هو في الدار خائفا إذ جاءه العاص بن وائل السهمي أبو عمرو عليه حلة حبرة وقميص مكفوف بحرير وهو من بني سهم وهم حلفاؤنا في الجاهلية فقال له ما بالك قال زعم قومك أنهم سيقتلوني إن أسلمت قال لا سبيل إليك بعد أن قالها أمنت فخرج العاص فلقي الناس قد سال بهم الوادي فقال أين تريدون فقالوا نريد هذا ابن الخطاب الذي صبا قال لا سبيل إليه فكر الناس
Bukhari narrated from Yahya Hanafi, from Ibn Wahb, from Umar bin Muhammad, "My grandfather Zayd told me," from Ibn Umar, the Islam of Umar. Walid bin Muslim differed from him, narrating from Umar bin Muhammad, "My father told me," from his grandfather, from Ibn Umar, adding a man in it.(A note) In the isnad is Hammad bin Zayd, who is one of the two Hammads, and this is termed by the people of hadith terminology "the concordant and the divergent."Ibn Salah, may Allah have mercy on him, said in Uloom al-Hadith, page 338, the sixth section, "This is where there is a shared identity in the name specifically, or the kunya specifically, and it becomes ambiguous because the narrator is not mentioned by anything else."An example of this is what we narrated from Ibn Khallad, the judge, the hafiz, who said, "When Arim says, 'Hammad narrated to us,' he means Hammad bin Zayd, and likewise Sulayman bin Harb. And when Budhaki says, 'Hammad narrated to us,' he means Hammad bin Salama, and likewise Hajjaj bin Minhal. And when Affan says, 'Hammad narrated to us,' it could be either of the two."Then I found, from Muhammad bin Yahya Dhuhli, from Affan, who said, "When I tell you, 'Hammad narrated to us,' without attributing him further, then he is Ibn Salama."And Muhammad bin Yahya mentioned, regarding those other than Budhaki, what Ibn Khallad had mentioned. End.
The Hafiz said in the introduction to Fath al-Bari, volume 2, page 128 (Taha edition), after mentioning the statement of Daraqutni,I say, in Bukhari's narration he stated explicitly that he heard it from his grandfather, so it appears that he did hear it from him, if Walid preserved it correctly. End quote.