and who, whenever they spend on others, are neither wasteful nor niggardly but [remember that] there is always a just mean between those [two extremes];

Those who, when they spend, are not extravagant and not niggardly, but hold a just (balance) between those (extremes);

And those who, when they spend, are neither prodigal nor grudging; and there is ever a firm station between the two;

And they who, when they spend are neither extravagant nor parsimonious, and the just mean is ever between these.

And [they are] those who, when they spend, do so not excessively or sparingly but are ever, between that, [justly] moderate