NT-GOSPEL.filter - rwp arotri:

rwp@1Corinthians:9:10 @{He that plougheth} (\ho arotrin\). Late verb \arotria\, to plough, for the old \aro\ from \arotron\ (plough), in LXX and rare in papyri. {In hope of partaking} (\ep' elpidi tou metechein\). The infinitive \aloin\ is not repeated nor is \opheilei\ though it is understood, "He that thresheth ought to thresh in hope of partaking." He that ploughs hardly refers to the ox at the plough as he that threshes does. The point is that all the workers (beast or man) share in the fruit of the toil.