Kural - 732

That is a 'land' which men desire for wealth's abundant share,
Yielding rich increase, where calamities are rare

Explanation
A kingdom is that which is desire for its immense wealth, and which grows greatly in prosperity, being free from destructive causes.

Tamil Transliteration
Perumporulaal Pettakka Thaaki Arungettaal
Aatra Vilaivadhu Naatu.