I couldn't find any information on a person named R. Nair being directly associated with the concept of marriage or relationships in India. However, there may be individuals with this name who have written or spoken about these topics.
Marriage is considered a sacred bond between two individuals, families, and communities. It's a union that's often arranged, with the involvement of family members, relatives, and sometimes, even matchmakers. The concept of marriage in India is not just about the union of two people but also about the coming together of two families.
The term "slave wife" is not a commonly used or accepted term in Indian culture or any other culture, for that matter. However, I believe you may be referring to the concept of a "devoted wife" or a wife who is deeply committed to her husband and family.
I believe that "xwapserieslat" may be a misspelled or incorrect term. However, I'm assuming that you may be referring to the concept of relationships, love, or intimacy in the context of marriage.