Kural - 265

That what they wish may, as they wish, be won,
By men on earth are works of painful 'penance' done

Explanation
Religious dislipline is practised in this world, because it secures the attainment of whatever one may wish to enjoy (in the world to come).

Tamil Transliteration
Ventiya Ventiyaang Keydhalaal Seydhavam
Eentu Muyalap Patum.