Kural - 894

When powerless man 'gainst men of power will evil deeds essay,
Tis beck'ning with the hand for Death to seize them for its prey

Explanation
The weak doing evil to the strong is like beckoning Yama to come (and destroy them).

Tamil Transliteration
Kootraththaik Kaiyaal Viliththatraal Aatruvaarkku
Aatraadhaar Innaa Seyal.