Based on the provided legal document, the key points are as follows:

1. An illegitimate child who is equated to a legitimate child under Section 16 of the Hindu Marriage Act, 1955, is entitled to share in the ancestral property of his father during the father's lifetime [judgement_subject][judgement_act_referred].

2. The legal status of the child's legitimacy is determined by the marriage's validity, and even if the marriage with the child's mother is void or voidable, the child can be considered legitimate for property rights purposes (!) .

3. Section 16 of the Hindu Marriage Act, 1955, explicitly states that children born from a marriage that is null and void are to be treated as legitimate, and this status grants them rights in the property of their parents, including ancestral property (!) .

4. The rights conferred by Section 16 extend to all property of the parents, not limited to self-acquired property, and include the right to seek partition during the lifetime of the father (!) .

5. The rights of an illegitimate child under Section 16 are not restricted to rights after the death of the parent; they can claim a share during the parent's lifetime, and there is no legal requirement that such claims can only be made posthumously (!) .

6. The claim of an illegitimate child to a share in ancestral property is valid, and the child's entitlement is generally proportional to the other children, often resulting in a one-sixth share if there are other siblings involved (!) .

7. The division of property should be made considering all legal heirs, including illegitimate children, and their respective shares, which may be adjusted based on the number of heirs and the nature of the property (!) .

8. The legal proceedings confirmed that the illegitimate child's claim to property rights during the father's lifetime is valid, and the court set aside lower court orders, declaring the child's share as one-sixth of the ancestral property (!) (!) .

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