first of all you have to verify that the property was purchased by father by his own funds or with the contribution of sons amount. if sons contributed for purchase adn kept in the name of his father and developed by father and sons. then it is joint family property and in that case the daughters have no share as their marriages are taken place much earlier to the act come in to force.
if the fatehr purchased the property and developed by himself and died intestate. the sons are managing the property with their money it is to establish whether any amounts or anything given to the daughers at the time of their marriages and any kind of arrangemt or talks taken place during life time of father before elders or family members. so verify the facts from yr clients and if the daughters are given at the time of marriages by father then the daughters will not claim any thing in the proerty left by father. if not according Hindu law wife , father , mother daughters and sons of deceased are class I heirs and they entilte equeal shares. sons by producing record about their expendeture for maintenance of property then can recover the same from daugthers but here one more aspect will come who enjoyed the yeilds from the property during lfe time and limitation also come to play its role for deciding the quantum of share of daughters . so first of all verify all the facts and do justice to ur client