The Division of Spoils and Dishonesty regarding them - Section 2 Mishkat al-Masabih 4016
Arabic hadith text
وَعَنْ أَبِي أُمَامَةَ عَنِ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: نَهْيٌ أَنْ تُبَاعَ السِّهَامُ حَتَّى تُقْسَمَ. رَوَاهُ الدَّارمِيّ
Translation
Abu Umama told that the Prophet forbade the sale of portions before they were divided. Tirmidhi transmitted it.