It is narrated from Sayyiduna Zubair bin Al-Awwam (may Allah be pleased with him) that he once mounted a man on a horse in the way of Allah, meaning he made him its owner. The horse's name was Ghamrah or Ghamra’. After some time, that same horse or one of its offspring was found being sold. Since it was attributed to the same horse which he had given in charity, he was forbidden from buying it again.