What is the ruling of Islamic law and civil law on filing a lawsuit by the six daughters to demand the division of inheritance after their father gifted his entire house to his five male sons and officially registered it with the condition of non-disposal, and allocated an unspecified one-sixth?

Among the conditions for a gift (hiba) to be complete is for the donor to relinquish possession of the gifted item, and for the donee to take possession of it and dispose of it as an owner would. Therefore, if a father prevents his children from disposing of a house gifted to them during his lifetime, the gift is not complete, and the house is considered an inheritance (tarika) to be divided among the heirs. In such disputes, it is necessary to refer to the Sharia court or to a qualified scholar of Islamic law capable of arbitration, to hear all parties and determine whether the gift was completed according to its Sharia conditions.