Yamaka Vagga (The Twin Verses)

Verse 13 & 14

Yathā’gāram ducchannam
vutthi samativijjhati
Evam abhāvitam cittam
rāgo samativijjhati
Even as rain penetrates
an ill-thatched house,
so does lust penetrate
an undeveloped mind.

Yathā’gāram succhannam
vutthi na samativijjhati
Evam subhāvitam cittam
rāgo na  samativijjhati

Even as rain does not penetrate
a well-thatched house,
so does lust not penetrate
a well-developed mind.
Meaning
 
yathā just as

gāram a house

ducchannam (which is) ill-thatched

vutthi rain

samativijjhati penetrates (through the roof)

evam even so

abhāvitam undeveloped

cittam mind

rāgo lust

succhannam well-thatched

na does not

subhāvitam well-developed