Sahih al-Bukhari 3865

Translation

When ʿUmar embraced Islam, all The (disbelieving) people gathered around his home and said, "ʿUmar has embraced Islam." At that time I was still a boy and was on the roof of my house. There came a man wearing a cloak of Dibaj (i.e. a kind of silk), and said, "ʿUmar has embraced Islam. Nobody can harm him for I am his protector." I then saw the people going away from ʿUmar and asked who the man was, and they said, "Al-ʿAs bin Wail."

Grades by grader

Narrators

1. 1
   ʿAbdullāh b. ʿUmar b. al-Khaṭṭāb

   One of the Companions who narrated most often, and one of the ʿAbādilah; he was among the people most strict in following the narrations (athar).d. 72 AH, or 73 AH, or 74 AH, also said: 75 AH
   عَبْدُ اللهِ بْنُ عُمَرَ بْنِ الْخَطَّابِأحد المكثرين من الصحابة والعبادلة ، وكان من أشد الناس اتباعا للأثر
   قال
2. 2
   ʿAmr b. Dīnār al-Athram

   trustworthy, precise (thiqah thabt)d. 125 AH, or 126 AH, or 129 AH, also said: 116 AH
   عَمْرُو بْنُ دِينَارٍثقة ثبت
   سمعت
3. 3
   Sufyān b. ʿUyaynah

   Trustworthy (thiqah), a memorizer (ḥāfiẓ), a jurist (faqīh), an imam and a proof (ḥujjah), except that his memory changed towards the end of his life; he sometimes practiced concealment (tadlīs), but only from trustworthy narrators.d. 197 AH or 198 AH
   سُفْيَانُثقة حافظ فقيه , إمام حجة إلا أنه تغير حفظه بأخرة , وكان ربما دلس لكن عن الثقات
   حدثنا
4. 4
   ʿAlī b. ʿAbdillāh

   trustworthy (thiqah), firmly reliable (thabt), an imāmd. 234 AH, or: 235 AH, also said: 233 AH
   عَلِيُّ بْنُ عَبْدِ اللهِثقة ثبت إمام
   حدثنا
5. 5
   al-Bukhārī

   a mountain of memorization and the leader of the world in the comprehension of hadith (jabal al-ḥifẓ wa-imām al-dunyā fī fiqh al-ḥadīth)d. 256 AH
   الْبُخَارِيُّجبل الحفظ وإمام الدنيا في فقه الحديث

Who each narrator was and how reliable, from hdith.com

Latin names and English verdicts with a dotted underline are machine translations, not reviewed.