Father giving share to sons of second wife

respected sir  a father  has given share in  agricultural lands in oral partition to his 2 sons through second wife  who had become second during subsistence  of first wife to  her husbend now can it be said that if property is alloted to illegal sons by partition is the property of illegal sons because it is alloted during life time of father. and question of sucession and right of inheritance to illegal sons can't be questioned by sibilings of first wife