Dhammapada 13-14 [Khuddaka Nikaya]

I- Yamakavagga, The Pairs
9- Nandatthera Vatthu

Yatha agaram ducchannam,
vutthi samativijjhati;
evam abhavitam cittam,
rago samativijjhati.

Yatha agaram suchannam,
vutthi na samativijjhati;
evam subhavitam cittam,
rago na samativijjhati.

13: Just as rain penetrates a badly-roofed house, so also, passion (raga) penetrates a mind not cultivated in Tranquillity and Insight Development (Samatha and Vipassana).
 

14: Just as rain cannot penetrate a well-roofed house, so also, passion (raga) cannot penetrate a mind well-cultivated in Tranquillity and Insight Development (Samatha and Vipassana).

Reference:
Mya Tin, Daw, tr. The Dhammapada: Verses and Stories. Rangoon: Burma Tipitaka Association, 1986. 

Posted by Nyan U