Musnad Ahmad 21883

Translation

✧ That the Prophet ﷺ bought a horse from a Bedouin, and the Prophet ﷺ asked him to follow him so that he could pay him the price of his horse. The Prophet ﷺ walked quickly while the Bedouin was slow, so some men began to intercept the Bedouin and bargain with him over the horse, not realizing that the Prophet ﷺ had bought it, until one of them outbid the price for which the Prophet ﷺ had bought the horse. The Bedouin called out to the Prophet ﷺ and said: 'If you are going to buy this horse, then buy it; otherwise I will sell it.' The Prophet ﷺ stood up when he heard the Bedouin's call and said: 'Have I not already bought it from you?' The Bedouin said: 'No, by Allah, I have not sold it to you.' The Prophet ﷺ said: 'Yes, I have bought it from you.' The people began to gather around the Prophet ﷺ and the Bedouin while they were arguing back and forth. The Bedouin began to say: 'Bring a witness to testify that I sold it to you.' Whoever came from the Muslims said to the Bedouin: 'Woe to you! The Prophet ﷺ would not say anything but the truth.' Until Khuzaymah came and listened to the exchange between the Prophet ﷺ and the Bedouin. The Bedouin kept saying: 'Bring a witness to testify that I sold it to you.' Khuzaymah said: 'I bear witness that you did sell it to him.' The Prophet ﷺ turned to Khuzaymah and said: 'On what basis do you bear witness?' He said: 'On the basis of believing you, O Messenger of Allah.' So the Prophet ﷺ made Khuzaymah's testimony equivalent to the testimony of two men.

Grades by grader

Narrators

1. 1
   ʿUmārah b. Thābit al-Anṣārī

   Companion (ṣaḥābī)
   عُمَارَة بْن ثَابِت الْأَنْصَارِيّصحابي
   حدثه
2. 2
   ʿUmārah b. Khuzaymah

   trustworthy (thiqah)d. 105 AH
   عُمَارَةُ بْنُ خُزَيْمَةَ الْأَنْصَارِيُّثقة
   حدثني
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
   الزُّهْرِيِّالفقيه الحافظ ، متفق على جلالته وإتقانه وثبته
   عن
4. 4
   Shuʿayb

   trustworthy (thiqah), devout (ʿābid)d. 162 AH, or 163 AH
   شُعَيْبٌثقة عابد
   حدثنا
5. 5
   Abū al-Yamān

   trustworthy, precise (thiqah thabt)d. 221 AH, or 222 AH
   أَبُو الْيَمَانِثقة ثبت
   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.