1. Even if there was an oral partition, by excluding the other legal heirs, an oral petition done among the few legal heirs is not valid hence the excluded legal heirs can claim their rights for their legitimate share in the properties that have been left intestate by the deceased.
2. This is a matter of trial proceedings, hence without perusing the suit papers and the relevant documents, no opinion can be rendered on this blunt question.
3. No it is not valid in the eyes of law.
4. The daughters need not have to pray for null and void nor cancellation of the subsequent sale deeds, they can confine to their relief of partition and separate possession of their legitimate share in the properties, but can implead the subsequent purchasers as necessary parties to the suit for partition even though the relief is restricted only to partition.
5. 'not binding' and 'null and void' are two different subjects, while the former do not attract any couirt fee.
6. It depends on the averments and the reliefs claimed based on the phrase 'null and void'