Did Putin literally say, "Those who serve us with poison will eventually swallow it and poison themselves"?

Question

It's going around that Putin said:

'Those who serve us with poison will eventually swallow it and poison themselves'.

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see:

• Darude

Putin: “Those who serve us with poison will eventually swallow it and poison themselves.”

• Attention To The Unseen

Putin: ‘Those who serve us with poison will eventually swallow it and poison themselves’

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After Viktor Sukhodrev's mishaps with Russian translation I'm skeptical to accept it at its face-value.

Is this an accurate translation? What is that phrase that he used? What does it mean?

Or is this just another «Мы вас похороним!»?

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edit: This seems to be the interview here: https://youtu.be/w7swxH6RjBY?t=50s it's dubbed over in English though, not sure how hard that makes it to hear.

As quoted by facenews the original Russian seems to be:

"Те, кто капает куда-то яд, сами его и проглотят в конце концов, сами этим ядом и отравятся".

капает seems to be a form of капать meaning:

to drip, drop, spill

Where the English says:

serve us with

I'm quite confused what drip has to do with serving someone.

Answer 1

If I recognized correctly, Putin said:

Те, кто капают куда-то яд, сами его и проглотят в конце концов, сами этим ядом и отравятся.

This could be translated as:

Those who drip poison somewhere will eventually swallow it and poison themselves.