Musnad Ahmad 6377

Translation

✧ Abdullah b. Umar used to narrate that he prayed it with the Prophet ﷺ. He said: The Messenger of God ﷺ said the takbir, and a group of us lined up behind him while another group faced the enemy. The Messenger of God ﷺ led them in one rak'ah and two prostrations, prostration like half of the morning prayer. Then they left and faced the enemy. The other group came and lined up with the Prophet ﷺ, and he did the same. Then the Prophet ﷺ said the salam, and each man of the two groups stood and prayed one rak'ah and two prostrations for himself.

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
   صريح في السماع
2. 2
   Sālim b. ʿAbdullāh b. ʿUmar b. al-Khaṭṭāb

   He was reliable (thabt), devout (ʿābid) and virtuous (fāḍil); he resembled his father in conduct (hady) and demeanor (samt)d. 105 AH or 106 AH or 107 AH or 108 AH, and the correct one is the first
   سَالِمِ بْنِ عَبْدِ اللهِكان ثبتا عابدا فاضلا ، كان يشبه بأبيه في الهدي والسمت
   عن
3. 3
   al-Zuhrī

   The jurist and memorizer (ḥāfiẓ), whose eminence, precision and reliability are agreed upond. Ḍamrah b. Rabīʿah and others said: 123 AH. The nephew of al-Zuhrī and others said: 124 AH. Ibn Yūnus and others said: 125 AH
   ابْنُ شِهَابٍالفقيه الحافظ ، متفق على جلالته وإتقانه وثبته
   حدثني
4. 4
   Ibn Jurayj

   Trustworthy (thiqah), a jurist (faqīh), excellent (fāḍil); he used to commit concealment (tadlīs) and to narrate with omission of the Companion (irsāl).d. 149 AH or 150 AH or 151 AH or 160 AH
   ابْنُ جُرَيْجٍثقة فقيه فاضل ، وكان يدلس ويرسل
   أخبرنا
5. 5
   ʿAbd al-Razzāq

   Trustworthy (thiqah), a retentive memorizer (ḥāfiẓ), a renowned author (muṣannif); he went blind at the end of his life and his memory changed (taghayyara), and he had Shiite leanings (kāna yatashayyaʿ)d. 211 AH
   عَبْدُ الرَّزَّاقِثقة حافظ مصنف شهير ، عمي في آخر عمره فتغير ، وكان يتشيع
   حدثنا
6. 6
   Aḥmad b. Ḥanbal

   Trustworthy (thiqah), a memorizer (ḥāfiẓ), a jurist (faqīh), an authority (ḥujjah).d. 241 AH, Abū Umayyah Muḥammad b. Ibrāhīm al-Ṭarsūsī said: 242 AH, and no one followed him in his view
   أحمد بن حنبلثقة حافظ فقيه حجة

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

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