The judgment primarily relies on the principles of Hindu property law, specifically the concept of coparcenary rights and the evolution of laws governing inheritance and partition among Hindu families. It considers the statutory provisions introduced through amendments to the Hindu Succession Act, which recognize daughters as coparceners by birth, with rights equivalent to those of sons, from a specified date. The court interprets these amendments in conjunction with the provisions of the Tamil Nadu Hindu Succession (Amendment) Act, 1989, and the 2005 amendment to ensure equal rights in coparcenary property. The judgment emphasizes the importance of the timing of partition deeds and the effect of legal amendments on the validity of such deeds, particularly distinguishing between partition acts executed before and after the relevant cut-off dates. It also considers the legal doctrine that once an ancestral property is partitioned, it ceases to be coparcenary property and becomes self-acquired property of the individual members, thereby affecting the rights of subsequent generations. The legal reasoning incorporates the principles of statutory interpretation, the effect of amendments on existing rights, and the recognition of rights created by birth in a coparcenary, as well as the significance of registered deeds and formal partition proceedings in establishing property rights.