Dhammapada 72 [Khuddaka Nikaya]

5 - Balavagga, The Fool
13 - Satthikutapeta Vatthu

Yavadeva anatthaya, nattam balassa jayati;
hanti balassa sukkamsam, muddhamassa vipatayam.

72: The skill of a fool can only harm him; it destroys his merit and his wisdom (lit., it severs his head).
Reference:
Mya Tin, Daw, tr. The Dhammapada: Verses and Stories. Rangoon: Burma Tipitaka Association, 1986.

Posted by Nyan U