Musnad Ahmad 12611

Translation

✧ I was sitting with the Messenger of God ﷺ in a circle, and a man was standing praying. When he bowed and prostrated, he sat and recited the tashahhud, then he supplicated, saying, "O God, I ask You by the fact that all praise belongs to You, there is no god but You, the Bestower, Originator of the heavens and the earth, Possessor of majesty and honor, O Living, O Self-Sustaining, I ask You." The Messenger of God ﷺ said, "Do you know what he supplicated with?" They said, "God and His Messenger know best." He said, "By the One in whose hand is my soul, he has supplicated God by His greatest name, which when He is called upon by it, He answers, and when He is asked by it, He gives." Affan said: "He supplicated by His name."

Grades by grader

Narrators

1. 1
   Anas b. Mālik

   a well-known Companiond. 90 AH, or 91 AH, or 92 AH, or 93 AH
   أَنَسُ بْنُ مَالِكٍصحابي مشهور
   عن
2. 2
   Ḥafṣ b. brother of Anas

   truthful (ṣadūq)d. between 111 and 120 AH
   حَفْصُ بْنُ عُمَرَصدوق
   حدثنا
3. 3
   Khalaf b. Khalīfah

   truthful (ṣadūq), his memory became confused (ikhtilāṭ) at the endd. Aḥmad said: I think in the year 180 AH or at the end of the year 179 AH, Ibn Saʿd said: 181 AH. From ʿAbd al-Ḥamīd: 185 AH
   خَلَفُ بْنُ خَلِيفَةَ [١]صدوق ، اختلط في الآخر
   حدثنا
4. 4
   ʿAffān

   trustworthy, precise (thiqah thabt)d. 219 AH, or 220 AH
   وَعَفَّانُثقة ثبت
   حدثنا
5. 5
   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.