Muhammad bin Sirin (may Allah have mercy on him) said that a man came to Sayyiduna Umar (may Allah be pleased with him) and said to him: My companion and I raced our horses towards the opening of the mountain pass, and we struck a gazelle while we were both in ihram. What is your view? Sayyiduna Umar (may Allah be pleased with him) said to a man sitting beside him: "Come, let us judge, you and I." So the two of them ruled that he must give a she-goat. He mentioned in the hadith that Umar (may Allah be pleased with him) said: "This is Abd al-Rahman bin Awf." [Da'if. Previously at no. 9857]
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الحج / 9995