Unequal Partition deed

Please share the citations numbers considering following points for Un Equal Register Partition Deed to be challenged in court. Share of all properties of Late Father among 4 Sisters / 1 Son / 1 Mother as follows through Register Partition Deed "(1)Mother - Wife Alive (1.1)25Lach Cash is given as her share in Partition deed (1.2)No physical property (1.3)Leaving with Son" ---------- "(2)Daughter-1 ( Elder Sister-1 ) (2.1)30x40 sq.feet site belongs to ancestor given by father during his life time through register gift deed, (2.2)Market value at the time of Partition deed is 50Lakh (2.3)The same is soled by all family member before the Register Partition deed (2.4)The same is mentioned as her share in Partition deed" --------- "(3)Daughter-2 ( Elder Sister-2 ) (3.1)30x40 sq.feet site belongs to ancestor given by father during his life time through register gift deed, (3.2)Market value at the time of Partition deed is 100Lakh (3.3)The same is mentioned as her share in Partition deed" ----------- "(4)Daughter-3 ( Elder Sister-3 ) (4.1)50Lach Cash is given as her share in Partition deed (4.2)No Physical property is given" ------------- "(5)Daughter-4 ( Elder Sister-4 ) (5.1)30x40 sq.feet site Father Self acquired property.Came through Partition deed (5.2)Market value at the time of Partition deed is 100Lakh" ------------- "(6)Son ( Younger brother ) ( Got Maximum Share ) (6.1)60x40 one vacant site. Market value is 200Lakh (6.2)60x40 duplex house. Market value is 250Lakh (6.3)19600 sq.feet land.Market value is 1219Lakh (6.4)As per partition deed if above 6.3 property is sold, 50Lakh will be given to sisters (above 2 / 3/ 4 / 5 ) OR If constructed 1200 sq. feet one apartment will be given to sisters not for Mother. (6.5)No time limited is fixed for above 6.4 (6.6)As per Partition deed it has stated for 6.3 property the sole ownership & the right to negotiate or sell or any third party transaction without consent of other family members alone by Son. " -------------- (A)Email has been exchanged from Elder Sister-2 ( Daughter-2 ) husband to Younger Brother before register deed (B)Kartha ( Father Nagappa. G ) died before the Register partition deed. (C)The Register partition deed is Un equal among the family members. (D)The Register partition deed contains some are self-acquired & some are ancestor properties. (E)Father Kartha was given / executed gift deeds of ancestor properties to his daughters 1 & daughter 2 when he was alive. (F)Mother, Sister-1, Sister-3, Sister-4 --> Are supporting to Younger Brother ( Son ). "(E)Suit / Case Elder Sister-2 ( Daughter -2 Plaintiff ) to Mother, Sister-1, Sister-3, Sister-4 & Younger Brother ( Defendants ) --> All are supporting to Younger Brother ( Son )."