poison with

poison (someone or an animal) with something

to render someone or an animal sick or dead with a poison. He intended to poison his wife with arsenic. Barry wanted to poison the cat with something that left no trace. He poisoned himself with the cleaning compound.
See also: poison

poison something with something

to render something poisonous with something. She poisoned the soup with arsenic. They are poisoning our water supply with pollutants.
See also: poison
References in classic literature ?
For this purpose he called for a cup, and while filling it with water, pretended to mix poison with the Cobbler's antidote, commanding him to drink it on the promise of a reward.
Even the terms used appear to be metaphorical and lend variety to the subject, conjoining poison with magic and heresy.