Which is the first nikand in Tamil language?

There is no concept of "nikand" in Tamil language. It seems you might be referring to a term from another language or context. Could you please clarify what you mean by "nikand"?

Perhaps you meant "Nīti" or "Nītikanda"? These terms are used in Tamil to refer to:

* Nīti: Moral principles, ethics, or codes of conduct.

* Nītikanda: A collection of moral teachings or ethical principles.

If you can provide more context or details, I can help you understand the term better.