What is theirs, and that it is in their money, not from their money, so it is not theirs except by taking it out, so if they distinguish it then they know that it was not from their money, but rather it was included in their money. This is the investigation. They believed that everything in their hands was their money and belonged to them. When God told people that In their money there is a right that they fulfill, and there is no apparent reason for the soul to rely on it, neither from debt nor from sale, except what God Almighty mentioned about saving that for him as a reward for the afterlife. This is difficult for souls to share in the money .