This is an item from Anton Moker's Decalogus metricus et paraenetica disticha, published in 1573. You can see the book at GoogleBooks.
Sorte Sua Contentus
Dives is et locuples satis est, qui vivere novit
Contentus sortis conditione suae.
The vocabulary is keyed to the DCC Latin Vocabulary list. There are two words in this poem that are not on the DCC list:
conditio (conditiōnis, f.): terms, contract
locūples (locūplētis): wealthy
contineō -tinēre -tinuī -tentum: contain, restrain
dīves, dīvitis: rich (poet. dīs, dītis)
is ea id: he, she, it
nōscō nōscere nōvī nōtum: learn, know
qui quae quod: who, which, what / quis quid: who? what? which?
satis/sat: enough, sufficient
sors sortis f.: lot, fate, destiny; oracle
sum, esse, fuī: be, exist
suus -a -um: his own, her own, its own
vīvō vīvere vīxī victum: live