Are girls entitled to share with boys the portion registered in their names, and are boys entitled to take their share from the remaining portion registered in the name of the head of the family, and are girls entitled to take the remaining portion registered in the name of the head of the family without the boys?

If the sales contract was valid, then the sons are obligated to pay the price of the properties to the heirs if they did not pay it during the father's lifetime. However, if the contract was fictitious, intended to favor some of the sons, then it is forbidden by Islamic law, and the properties must be returned to the inheritance. Likewise, if the writing was a will made after death, it is not valid and cannot be executed except with the consent of the mature heirs, and the daughters have the right to share equally with the sons. The sons have the right to take their share from the entire inheritance of the father if the sales contract was valid. However, if it was not valid, then the daughters may take their share from the properties that were not registered in the names of the sons, and this is called amicable division (qismat at-taradi). Finally, inheritance issues must be brought before the Sharia courts for investigation.