References in classic literature ?
They were sparing of the Heat-Ray that night, either be- cause they had but a limited supply of material for its production or because they did not wish to destroy the country but only to crush and overawe the opposition they had aroused.
In the first case he ought to be sparing, in the second he ought not to neglect any opportunity for liberality.
The Blackfeet knew and marked him as he passed; he was within bowshot of their ambuscade; yet, much as they thirsted for his blood, they forbore to launch a shaft; sparing him for the moment that he might lead them to their prey.
God knows I'd ha' borne a good deal worse for the sake o' sparing it you.