1. Linking of aadhar card with purchase of the property is prerogative of court in which you have no control.
2. i am not sure what benefit it would give you as far taking share in the sold property is concerned..
3. in the partition suit you require to include all the joint properties for its effective partition. if due to your ignorance any property is left then nothing cold be done with regard thereto.
4. However during pendency of the suit you can add more joint properties if those came to your knowledge later on.
5. Many court decisions are available in online searches. You can read those.