A man donated a horse called Ghamra, or Ghamraa, for the cause of Allah. Later, he found a horse, or a foal, being sold that was traced back to that same horse, so he was forbidden from buying it.
حدثنا يزيد بن هارون أنبأنا سليمان يعني التيمي عن أبي عثمان عن عبد الله بن عامر
أن رجلا حمل على فرس يقال لها غمرة أو غمراء وقال فوجد فرسا أو مهرا يباع فنسبت إلى تلك الفرس فنهي عنها
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Its chain of transmission is sahih. Sulayman Taymi is Sulayman bin Tarkhan. He was not actually from Banu Taym, but simply settled among them. He was a trustworthy successor (tabii), one of the devoted worshippers and righteous men of Basra, reliable in trustworthiness, precision, memory, and adherence to the sunnah.Abu Uthman Nahdi is Abdul-Rahman bin Mull bin Amr, from Banu Nahd. He was a senior and trustworthy successor who witnessed the pre-Islamic era and accepted Islam during the lifetime of the Messenger of Allah, though he never actually met him. He migrated to Madinah after the death of Abu Bakr, then settled in Kufa, and afterward in Basra. He died in the year 100.As for Abdullah bin Amir, in Tahdhib volume 5, page 276, Ibn Abu Hatim said it is possible that he is Ibn Amir bin Rabia, meaning the Anazi, the ally of Banu Adi. But I consider it more likely that he is Abdullah bin Amir bin Kurayz bin Rabia bin Habib bin Abd Shams bin Abd Manaf al-Qurashi. He was a senior successor, born during the lifetime of the Messenger of Allah ﷺ. Ibn Manda mentioned him among the companions. He was generous and courageous. Uthman appointed him governor of Basra after Abu Musa, in the year 29, and he is the one after whom the canal of Ibn Amir is named. He was Uthman's maternal cousin, and he took part in the Battle of the Camel alongside Ayesha, but then withdrew from the fighting at Siffin. Muawiya later appointed him governor of Basra for three years. So this was a successor who resided in Basra and was present on the day of the Camel alongside Zubayr, making it more plausible that the hadith is transmitted through him, narrating it from a man among the people of Basra, namely Abu Uthman Nahdi. As for Abdullah bin Amir bin Rabia al-Anazi, he was from the people of Madinah.Mull is pronounced with the mim vowel variable across three possibilities, and with the lam doubled. Kurayz is a diminutive form.As for the man who charged forward on the horse, it is possible that he was Umar bin Khattab, as mentioned previously at 281. However, Ibn Majah, volume 2, pages 37 to 38, transmitted the hadith from Yahya bin Hakeem, from Yazid bin Harun, and in his version it reads, "from Zubayr bin Awwam, that he charged on a horse," attributing the incident to Zubayr himself. This is perhaps the more likely reading.