Concept:
The Hindu Marriage Act, 1955, specifies certain degrees of relationships within which marriage is prohibited. These are known as 'Sapinda' relationships.
• Definition: Two persons are said to be "sapindas" of each other if one is a lineal ascendant of the other within certain limits.
• The Limits: 3 generations through the mother and 5 generations through the father.
Step 1: Understanding the difference between Endogamy and Exogamy.
Endogamy requires a person to marry within a specific group (like caste).
Exogamy requires a person to marry outside a specific group or lineage.
The Sapinda rule (under Section 3(f) and 5(v)) acts as a bar to marriage within the family line. It forces individuals to seek partners outside their immediate biological lineage to prevent genetic complications and maintain social structures.
Step 2: Identifying the underlying principle.
Since Sapinda prohibits marrying inside the lineage, it promotes
Exogamy.
Therefore, the Sapinda relationship rule is an application of the
Principle of Exogamy.
Marrying a Sapinda is considered void unless the custom or usage governing each of them permits such a marriage.