Shu'bi (may Allah have mercy on him) said: The people of Mah attacked the Arabs, took their slaves and goods captive, then Sayyiduna Sa'ib bin Al-Aqra' attacked them, and wrote to 'Umar (may Allah be pleased with him). So 'Umar (may Allah be pleased with him) replied: "Whoever among the Muslims finds his property itself, he has more right to it. If it is found with traders after distribution, then there is no right. And if a trader buys a free Muslim, then their money should be returned, because a free man can neither be sold nor bought. And whatever wealth is obtained before the end of the battle, its khums (one-fifth) should be taken out, and the rest of the wealth should be distributed. And whatever wealth is obtained after the battle is over, it will belong to its owner."