In the early stages of commerce there seems no way of making money rapidly so sure as that of buying up grain in time of famine, waiting until the dearth presses heavily, and then selling at famine prices. Men hate this selfishness, and pour blessings upon him who sells at a moderate profit.

He that withholdeth corn - Who refuses to sell because he hopes for a dearth, and then he can make his own price.
The people shall curse him - Yes, and God shall curse him also; and if he do not return and repent, he will get God's curse, and the curse of the poor, which will be a canker in his money during time, and in his soul throughout eternity.

He that withholdeth grain, the people shall curse him: but blessing [shall be] upon the head of him that (p) selleth [it].
(p) That provides for the use of them who are in need.

He that withholdeth corn, the people shall curse him,.... That hoards it up for a better price, in hopes of a better market; and does not bring it out, and expose it to sale, when there is a scarcity of it; so the Targum adds, "in famine"; or, "in straits", as the Syriac version; in a time of distress through, famine: this will bring the curse of the poor upon him, who will imprecate the most dreadful things on him and his family. Jarchi interprets it of the law, and of withholding the teaching of it; but it may be better applied to the Gospel, and the withholding the ministration of that, and so causing a famine, not of bread and of water, but of hearing the word of the Lord; which is done by the Papists, by prohibiting Gospel ministers preaching the word; forbidding the people to read it in their own language; locking it up from them in a language they understand not; and so starve the souls of men, which brings upon them a curse;
but blessing shall be upon the head of him that selleth it; at a moderate price, so that the poor may be able to come at it; such will have their blessing; they will wish all happiness to them and their families, here and hereafter. Or, "that breaks" (d) it; separates it from the heap, breaks and grinds it into flour, and then sells it: or imparts it freely; so the Septuagint version, "that communicates": and the Arabic version, "that gives"; and may be fitly applied to a faithful minister of the Gospel, who breaks the bread of life, and freely and plentifully imparts it to the souls of men; and who has the hearty prayers and good wishes of the people to whom he ministers. The master of a family used to break the bread, as Christ often did.
(d) "frangentis", Montanus.

We must not hoard up the gifts of God's bounty, merely for our own advantage.

Another example of the truth of Proverbs 11:23; the miser loses reputation, though he saves corn.
selleth it--that is, at a fair price.

26 Whoso withholdeth corn, him the people curse;
But blessing is on the head of him that selleth it.
This proverb is directed against the corn-usurer, whose covetousness and deceitful conduct is described in Amos 8:4-8. But whilst it is there said that they cannot wait till the burdensome interruption of their usurious conduct on account of the sacred days come to an end, the figure here is of a different aspect of their character: they hold back their stores of corn in the times of scarcity, for they speculate on receiving yet higher prices for it. בּר (from בּרר, to purify, to be pure) is thrashed grain, cf. Arab. burr, wheat, and naḳḳy of the cleaning of the grain by the separation from it of the tares, etc. (Fl.); the word has Kametz, according to the Masora, as always in pause and in the history of Joseph. מנע has Munach on the syllable preceding the last, on which the tone is thrown back, and Metheg with the Tsere as the sign of a pause, as Proverbs 1:10 בּצע (vid., p. 67). משׁבּיר, qui annonam vendit, is denom. of שׁבר, properly that which is crushed, therefore grain (Fl.). לאמּים, which we would understand in the Proph. of nations, are here, as at Proverbs 24:24, the individuals of the people. The בּרצה which falls on the head of the charitable is the thanks of his fellow-citizens, along with all good wishes.

With - holdeth corn - In a time of scarcity. Selleth - Upon reasonable terms.