How to get mother's share in her ancestral property

My mother has 9 brother and sisters. They all gets property partition from their parents and partiation details documents make in single legal version.after that all members have made indivisual documentation respective their property.but my mother does not make them and lying in single documentation with her brother. Thereafter they two members lying in that.But after my mother death uncle doesn't getting interest to transfer the property to us.therefore I want to know how can I solve them or process ? Also I have a brother. ....