Using this hadith as evidence on this issue is not sound. It has already been explained in this book of ours what the state of the spoils was on the day of Badr until the verse was revealed; the evidence is only in his (peace and blessings be upon him) giving the spoils (salab) to the killer after the battle of Badr, and that is clear in the hadith of Sayyiduna Abu Qatadah (may Allah be pleased with him) and others.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب قسم الفيء والغنيمة / 12760