προσωφελητέον
From LSJ
ἀσκεῖν περὶ τὰ νοσήματα δύο, ὠφελεῖν ἢ μὴ βλάπτειν → strive, with regard to diseases, for two things — to do good, or to do no harm | as to diseases, make a habit of two things — to help, or at least, to do no harm
English (LSJ)
A one must assist, X.Ages.11.8.
Greek (Liddell-Scott)
προσωφελητέον: δεῖ προσωφελεῖν, Ξεν. Ἀγησ. 11, 8.
Greek Monotonic
προσωφελητέον: ρημ. επίθ., πρέπει κάποιος να βοηθήσει, σε Ξεν.