Qui Dat, Commendatur

This is from Hans Walther and Paul Gerhard Schmidt's Proverbia Sententiaeque Latinitatis Medii Aevi (1963-1986) - not available online, unfortunately.

Qui Dat, Commendatur
Danti saepe datur, nil danti saepe negatur;
Dans commendatur, sed nil dans vituperatur.

The vocabulary is keyed to the DCC Latin Vocabulary list. There are two words in this poem that are not on the DCC list:

commendō, commendāre: entrust, commend
vituperō, vituperāre: blame, disparage, find fault

dō dare dedī datum: give
negō -āre: deny, refuse
nihil, nīl: nothing; not at all
saepe: often

(image source)